Overnight Steel Cut Oats with Quinoa: Your New Favorite Slow Cooker Breakfast

The Best Overnight Steel Cut Oats Recipe for Easy Mornings

Imagine waking up to the inviting aroma of a warm, wholesome breakfast without having to lift a finger. This incredible Overnight Steel Cut Oats recipe, made with robust steel-cut oatmeal and protein-packed quinoa in the slow cooker, makes that dream a reality. It’s the ultimate make-ahead meal, delivering a creamy, satisfying texture that’s never mushy. Simply add your favorite fresh berries and a splash of milk in the morning for a nutritious and delicious breakfast the whole family will adore.

Author’s Note

Wake Up to the Best Overnight Steel Cut Oats, Perfectly Cooked Every Time!

For years, I was on a quest to master the art of overnight oatmeal in the slow cooker. My early attempts often ended in disappointment, resulting in a pot of flavorless, soggy mush by morning. It was a frustrating experience, especially when all I wanted was a quick and warm breakfast to start the day right.

Determined to crack the code, I embarked on a series of culinary experiments, dedicating many early mornings to testing different ratios, cooking temperatures, and ingredients. The goal was simple: achieve a creamy, hearty texture that held up beautifully overnight, without becoming gummy or bland. After numerous trials and errors, I finally discovered the secret to perfect slow cooker steel cut oats.

This Overnight Steel Cut Oats recipe is the culmination of all that meticulous testing. What makes it truly special is the addition of quinoa, which not only boosts the protein content but also adds an incredible nutty flavor and a delightful, satisfying texture that complements the chewiness of the steel-cut oats. Unlike traditional overnight oats that are often served cold, this slow cooker version ensures you wake up to a comforting, warm bowl of goodness. It’s creamy, yet robust, and hearty without feeling heavy. The best part? You can simply toss everything into your slow cooker the night before, set it, and forget it. Imagine the luxury of waking up to a ready-made, warm breakfast that the whole family will devour, freeing up precious morning minutes and eliminating the rush. This recipe has transformed our mornings, and I’m thrilled to share it with you!

Why You’ll Adore This Overnight Steel Cut Oats Recipe

This slow cooker steel cut oats recipe isn’t just another breakfast option; it’s a lifestyle upgrade. Here’s why it will quickly become a staple in your home:

• Effortless Morning Prep: Say goodbye to frantic mornings. With this recipe, you spend less than 10 minutes assembling the ingredients the night before. Wake up to a cooked breakfast, ready to be served, giving you more time for yourself or your family.
• Unbeatable Texture: No more mushy oatmeal! Steel-cut oats are known for their hearty bite, and when combined with the low-and-slow cooking method of a slow cooker, they achieve a perfectly creamy, yet delightfully chewy texture that holds its shape overnight. The quinoa further enhances this, adding a pleasant, slightly firm pop.
• Highly Customizable: The base recipe is fantastic on its own, but it truly shines with endless topping possibilities. From fresh fruits and crunchy nuts to decadent drizzles and creamy butters, you can create a unique flavor profile every single day.
• Feeds a Crowd & Perfect for Meal Prep: This recipe yields a generous batch, making it ideal for feeding a large family breakfast, hosting brunch, or prepping healthy meals for the entire week. Leftovers store wonderfully and reheat beautifully, providing convenient breakfasts throughout your busy schedule.
• Nutrient-Dense & Wholesome: Steel-cut oats are packed with fiber, promoting digestive health and sustained energy. Quinoa adds a complete protein boost, making this a breakfast that keeps you full and energized until lunchtime.

Essential Ingredients for Your Overnight Steel Cut Oats

Crafting the perfect bowl of slow cooker steel-cut oats with quinoa begins with selecting the right ingredients. Each component plays a vital role in achieving that coveted creamy, nutty, and satisfying breakfast. Here’s a detailed look at what you’ll need and why:

Elevate Your Breakfast with Delicious Toppings

While the slow cooker overnight steel cut oats are delightful on their own, the toppings are truly where you can let your creativity shine and customize each bowl to your liking. Here are some fantastic topping ideas to inspire you and transform your breakfast into a culinary masterpiece:

• Banana Nut Bliss: Layer your warm oats with freshly sliced ripe bananas for natural sweetness, a generous sprinkle of ground cinnamon for comforting warmth, and a dollop of creamy peanut butter or almond butter for healthy fats and protein.
• Berry Burst Extravaganza: Adorn your oatmeal with a colorful medley of fresh or frozen berries (strawberries, blueberries, raspberries, blackberries). Add an extra splash of almond milk for creaminess and a spoonful of almond butter for an extra touch of richness.
• Apple Cinnamon Comfort: Dice crisp apples and gently warm them (or add fresh) with a generous dusting of cinnamon. Drizzle with a little extra maple syrup for a taste reminiscent of apple pie.
• Strawberries & Cream Dream: Slice fresh, juicy strawberries over your oats. Add a splash of heavy cream (or a dairy-free alternative like coconut cream) for a luxurious texture, and finish with a swirl of your favorite nut butter.
• Nut & Seed Crunch: For those who love texture, top with a crunchy mix of chopped nuts (walnuts, pecans, almonds), nutrient-rich pumpkin seeds or chia seeds, and a handful of dried fruits like cranberries or raisins for bursts of sweetness.
• Tropical Delight: Add diced mango, shredded coconut, and a sprinkle of chopped macadamia nuts for a sunny, exotic twist.
• Chocolate Lover’s Treat: Stir in a few chocolate chips or cocoa nibs right before serving, or drizzle with a touch of chocolate syrup.

Overnight Steel Cut Oats: Flexible Cooking Options

One of the beauties of this slow cooker recipe is its adaptability. Depending on your schedule and the type of steel-cut oats you’re using, you have several cooking options to ensure perfectly cooked oatmeal every time. Remember that slow cookers can vary, so it’s always good to know your appliance!

• Standard Overnight Cook (Regular Steel-Cut Oats): This is the most common and recommended method for classic steel-cut oats. Begin by cooking on the LOW setting for 1 hour. This initial burst of heat helps bring the mixture up to temperature. After the hour, switch your slow cooker to the WARM setting for an additional 8–9 hours. This gentle, prolonged warmth ensures the oats and quinoa soften beautifully without overcooking into mush.
• Quicker Overnight Option (Quick-Cooking Steel-Cut Oats): If you’re using quick-cooking steel-cut oats (always check your package label carefully, as they are processed differently), the cooking time will be reduced. Cook on the LOW setting for approximately 30 minutes, then switch to WARM for 6–7 hours. Be cautious, as quick-cooking varieties are more prone to becoming mushy if left too long.
• Morning Brunch / Same-Day Cooking: Don’t want to wait until morning? You can prepare this recipe for a same-day brunch. Cook on the LOW setting for 2½–4 hours. This shorter cooking time is perfect if you’re planning a weekend brunch or need a warm meal mid-day. We do not recommend using the HIGH setting, as it can cook too aggressively and result in scorched or unevenly cooked oats.

Important Note on Slow Cooker Variance: Every slow cooker is a little different. Some run hotter than others. If your oats seem to be cooking faster than expected, you might need to adjust the warm time slightly. Conversely, if they’re still too firm in the morning, turn the slow cooker back to LOW for an extra 30 minutes to an hour until tender. The goal is creamy and tender, not gummy or watery.

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Rating: 4.62 from 13 votes

Overnight Steel Cut Oats with Quinoa

By Chelsea Lords

This Overnight Steel Cut Oats recipe, featuring wholesome oatmeal and protein-rich quinoa, is a healthy and incredibly hands-off breakfast. Cooked perfectly in your slow cooker, it’s ready to be topped with fresh berries and a splash of milk for a delicious start to any day!

Prep Time: 15 minutes

Cook Time: 8 hours

Total Time: 8 hours 15 minutes

Servings: 6 servings

Equipment

• 6-quart Slow Cooker

Ingredients

• 1-1/2 cups steel-cut oatmeal (see Note 1 below for important details on oat type)
• 1/2 cup white quinoa, rinsed thoroughly
• 5 cups unsweetened vanilla almond milk (or water, though almond milk is preferred for creaminess)
• 4 tablespoons brown sugar, packed
• 2 tablespoons maple syrup
• 1/4 teaspoon salt
• 1-1/2 teaspoons vanilla extract
• Optional: 1/4 teaspoon ground cinnamon (if not using cinnamon as a topping)
• Toppings as desired (see Note 2 and the ‘Toppings’ section above for ideas)

Instructions

1. Prepare your slow cooker: Generously spray the interior of a 6-quart slow cooker with cooking spray, or use a slow cooker liner for easier cleanup. This step is crucial to prevent sticking.
2. Rinse the quinoa: Place the 1/2 cup of white quinoa in a fine-mesh strainer. Rinse it under cold running water for approximately 30 seconds to 1 minute, swirling it gently with your fingers. This removes saponins, which can cause a bitter taste. Allow the quinoa to drain and dry slightly.
3. Combine ingredients: Add the rinsed steel-cut oats, dried quinoa, almond milk, brown sugar, maple syrup, salt, vanilla extract, and optional cinnamon into the prepared slow cooker.
4. Stir and set: Stir all the ingredients together thoroughly until well combined. Place the lid securely on the slow cooker. Set the slow cooker to the LOW setting and cook for 1 hour. After this initial hour, without opening the lid or disturbing the contents (it’s important to keep the heat trapped inside!), switch the dial to the WARM setting.
5. Cook overnight: Allow the oats and quinoa mixture to cook overnight on the WARM setting for 8–9 hours. It’s essential not to exceed this time, as cooking it for too long can result in a mushy or gummy texture. (Refer to Note 3 for specific timing variations).
6. Serve: In the morning, as soon as you wake up, immediately turn off the slow cooker. Give the oats a good stir. There might still be some liquid present, but it will continue to absorb as the oats sit and are served. I personally prefer them with a bit more liquid for a creamier consistency, rather than dry and dense. These oats are designed to be beautifully creamy.
7. Top and enjoy: Ladle the warm overnight steel cut oats into bowls. Customize each serving with your favorite toppings such as fresh fruit, an extra splash of milk, a sprinkle of additional brown sugar, a drizzle of honey or maple syrup, and a big scoop of your preferred nut butter (peanut butter, almond butter, cashew butter, etc.). Enjoy your effortlessly delicious and wholesome breakfast!

Recipe Notes

Note 1: Oat Type is Crucial! You must use STEEL-CUT OATS for this recipe. Do NOT use regular old-fashioned rolled oats, quick oats, or instant oats, as they will turn into an unpleasant paste or mush due to the long cooking time. If you happen to use instant or quick-cooking steel-cut oats (double-check the package, as sometimes they can be tricky to differentiate), the total cooking time on the WARM setting will be shorter, typically around 6–8 hours. For the best, most consistent results and that signature chewy texture, I highly recommend using regular steel-cut oatmeal.

Note 2: Topping Suggestions. The possibilities are endless! Beyond the suggestions in the “Toppings” section above, consider adding a dash of ground cinnamon (if not included in the recipe itself), fresh berries, an extra splash of milk (dairy or non-dairy), and additional sweetener like brown sugar, honey, or maple syrup right before serving.

Note 3: Understanding Cooking Times & Slow Cooker Variations.

• For Morning Brunch (Same Day): Cook on LOW for 2-1/2 to 4 hours. It is strongly advised against cooking this recipe on the HIGH setting, as it can easily overcook and burn the oats.
• Overnight (with Quick-Cooking Steel-Cut Oats): Cook on LOW for 30 minutes, then switch to WARM for 6–7 hours. Monitor closely as these can overcook faster.
• Overnight (with Regular Steel-Cut Oats): Cook on LOW for 1 hour, then switch to WARM for 8–9 hours. This is the ideal method for classic steel-cut oats.
• Slow Cooker Performance: Please be aware that not all slow cookers operate identically; some run hotter or cooler than others. If your slow cooker tends to cook quickly, your oats might be ready a bit sooner than the indicated times. Conversely, if your oats/quinoa aren’t as tender as desired in the morning, simply turn the slow cooker back to LOW for an additional 30 minutes to an hour. Leaving the oats in the slow cooker on WARM for significantly longer than recommended can cause them to become mushy and gummy.

Storage & Reheating: Any leftover overnight steel cut oats can be stored in an airtight container in the refrigerator for up to 4 days. When reheating, stir in a splash of milk (almond, dairy, or water) to loosen the texture, as it will thicken significantly in the fridge. Reheat gently on the stovetop or in the microwave until warm.

Nutrition

Serving: 1 serving | Calories: 387kcal | Carbohydrates: 67g | Protein: 13g | Fat: 8g | Saturated Fat: 1g | Sodium: 358mg | Potassium: 139mg | Fiber: 8g | Sugar: 14g | Calcium: 291mg | Iron: 3mg

Nutrition information is automatically calculated, so should only be used as an approximation and can vary based on specific ingredients and brands.

Tips for the Perfect Overnight Steel Cut Oats Batch

Achieving consistently perfect slow cooker steel cut oats is simple with these expert tips. Follow these guidelines to ensure your breakfast is always creamy, flavorful, and wonderfully textured:

• Choose the Right Slow Cooker Size: For this recipe, a 6-quart slow cooker is recommended as it provides enough space for the oats to cook evenly without overflowing. Smaller slow cookers may not yield the same results and haven’t been tested with these specific liquid-to-oat ratios.
• Grease or Line Your Slow Cooker Well: To prevent sticking and make cleanup a breeze, always generously spray the interior of your slow cooker with cooking spray or use a slow cooker liner. This is especially important for oatmeal, which can sometimes adhere to the sides.
• Resist the Urge to Peek: Once the lid is on and the slow cooker is set, avoid lifting the lid. Each time you open it, precious heat escapes, which can significantly prolong the cooking time and negatively impact the final texture of your oats and quinoa. Trust the process!
• Only Use Steel-Cut Oats: This cannot be stressed enough. Rolled oats, quick oats, or instant oats have a different processing and will turn into a watery, unappetizing mush during the long slow-cooking process. Stick to true steel-cut oats for that signature hearty, chewy texture.
• Opt for Plant-Based Milk for Creaminess: Almond milk is highly recommended for its creamy consistency and subtle flavor, plus its stability during prolonged heating. Oat milk and cashew milk are also excellent choices. While water can be used, it will result in a less creamy finish. Avoid cow’s milk, as it has a tendency to curdle when cooked on low heat for extended periods.
• Rinse Your Quinoa Thoroughly: Don’t skip rinsing the quinoa! This step removes saponins, a natural coating that can impart a bitter or soapy taste. A quick rinse under cold water in a fine-mesh sieve is all it takes.
• Adjust Sweetness to Your Liking: The recipe provides a good starting point for sweetness, but feel free to adjust it to your personal preference. You can reduce the amount of brown sugar and maple syrup during cooking and add more once served.
• Stir Well Before Serving: In the morning, after turning off the slow cooker, give the oats a good stir. This helps to redistribute any liquid and ensures a consistent, creamy texture throughout.

Health Benefits of Overnight Steel Cut Oats with Quinoa

This isn’t just a delicious breakfast; it’s a powerhouse of nutrition designed to fuel your day. The combination of steel-cut oats and quinoa offers a multitude of health benefits:

• Rich in Fiber: Steel-cut oats are an excellent source of soluble and insoluble fiber. Soluble fiber helps lower cholesterol and stabilize blood sugar levels, while insoluble fiber promotes healthy digestion and satiety, keeping you full longer.
• Complete Protein from Quinoa: Quinoa is one of the few plant-based foods that is a complete protein, meaning it contains all nine essential amino acids. This makes your breakfast more satisfying and supports muscle health and repair.
• Sustained Energy Release: Both oats and quinoa are complex carbohydrates, which means they are digested slowly, providing a steady and sustained release of energy. This prevents energy crashes often associated with sugary breakfasts and keeps you feeling alert and focused.
• Heart Health: The fiber in steel-cut oats is known to contribute to cardiovascular health by helping to reduce LDL (bad) cholesterol levels.
• Antioxidant Rich: Oats and quinoa both contain antioxidants, which help protect your body’s cells from damage by free radicals.
• Naturally Gluten-Free (Check Labels): While oats are naturally gluten-free, they can sometimes be processed in facilities that also handle gluten-containing grains. If you have a gluten sensitivity or allergy, look for certified gluten-free steel-cut oats and quinoa.

Frequently Asked Questions (FAQs) About Overnight Steel Cut Oats

Here are answers to some common questions about making and enjoying slow cooker overnight steel cut oats:

Can I use water instead of almond milk?

Yes, you can substitute water for almond milk. However, using almond milk (or other plant-based milks like oat or cashew milk) will result in a much creamier and richer oatmeal. Water will give you a lighter, less indulgent texture.

Is this recipe vegan and gluten-free?

Yes! This recipe is naturally vegan if you use almond milk (or another plant-based milk) and vegan-friendly sweeteners like maple syrup or brown sugar. For gluten-free, ensure you purchase certified gluten-free steel-cut oats, as cross-contamination can occur during processing.

Can I add fruit to the slow cooker before cooking?

It’s generally not recommended to add delicate fruits like berries before cooking, as they can become mushy and lose their vibrant flavor and texture. Heartier dried fruits like raisins, cranberries, or chopped dried apricots can be added during cooking. For fresh fruit, it’s best to add them as toppings just before serving.

How do I prevent the oats from sticking to the slow cooker?

Generously spray your slow cooker with cooking spray before adding ingredients. Alternatively, you can use a slow cooker liner, which makes cleanup incredibly easy.

My oats are too mushy/gummy in the morning, what happened?

This usually happens if the oats were cooked for too long or if the slow cooker runs hotter than average. Ensure you’re using true steel-cut oats (not rolled or quick oats). Try reducing the “warm” cooking time by 1-2 hours next time, or check if your slow cooker’s “warm” setting is actually quite hot.

My oats are too dry/thick in the morning, what should I do?

This can occur if your slow cooker runs cooler, or if the oats absorbed more liquid than expected. To fix this, simply stir in an extra splash of almond milk (or water) until you reach your desired consistency when serving or reheating. If they’re undercooked, turn the slow cooker back to LOW for 30-60 minutes.