Brownie Batter Overnight Oats are a sweet and creamy breakfast that tastes like dessert! With rich cocoa and chocolate chips, they’re both tasty and filling.
If you’re like me, you might just be tempted to eat them straight from the jar! Plus, they are super easy to make. Just mix, refrigerate, and enjoy a delicious start to your day!
Key Ingredients & Substitutions
Old-fashioned rolled oats: These are the best choice for overnight oats because they absorb liquid well without getting too mushy. If you’re in a pinch, quick oats can work but may change the texture. Avoid instant oats if you can.
Cocoa powder: Unsweetened cocoa gives that rich brownie flavor. If you want it sweeter, you might try dark cocoa powder. Carob powder is a caffeine-free substitute, though it will alter the taste a bit.
Chia seeds: They thicken the oats and add healthy omega-3 fats. If you don’t have them, you can skip them, but your oats will be a bit less creamy. Flax seeds can also be used as a substitute.
Maple syrup or honey: Both sweeteners work well. Maple syrup has a unique flavor, but honey is fantastic too. If you’re vegan, stick with maple syrup. Agave syrup is also a good alternative.
Milk: Use your favorite milk, whether it’s dairy, almond, oat, or soy. Coconut milk can add an extra creaminess but will have a coconut flavor. You can also use water in a pinch, but it won’t be as rich.
Greek yogurt: While optional, it makes the oats creamier. If you want a dairy-free option, use a plant-based yogurt. Silken tofu blended smooth can also work!
How Can I Make My Oats Thicker and Creamier?
To achieve the perfect texture, soaking your oats is key. Incorporating chia seeds enhances thickness and provides a nutritional boost. Here’s how to make it work:
- Combine the oats and chia seeds in your jar or bowl before adding the liquid.
- Ensure you mix well to prevent clumping. Stir again after adding milk or yogurt.
- If your oats are too thick in the morning, just add a bit more milk until you reach your desired texture.
Taking the time to let these ingredients meld overnight creates a delightful breakfast that is not just nourishing but oh-so-delicious!

Brownie Batter Overnight Oats
Ingredients:
- 1/2 cup old-fashioned rolled oats
- 1 tablespoon unsweetened cocoa powder
- 1 tablespoon chia seeds (optional, for thickness)
- 1 tablespoon maple syrup or honey
- 1/2 teaspoon vanilla extract
- 1/2 cup milk (dairy or plant-based)
- 1/4 cup Greek yogurt or dairy-free yogurt (optional, for creaminess)
- 2 tablespoons mini chocolate chips (plus extra for topping)
- Pinch of salt
- Granola for topping (optional)
Total Time Estimate:
You’ll need about 10 minutes to prepare the oats, and then they should chill in the fridge for at least 4 hours or overnight. So, in total, just about 10 minutes of prep and then let them rest overnight for the best results!
Instructions:
1. Mix the Dry Ingredients:
In a mason jar or a bowl, combine the rolled oats, cocoa powder, chia seeds (if you’re using them), and a pinch of salt. Stir them together well so everything is evenly mixed. This gives your oats that delicious brownie flavor!
2. Add the Wet Ingredients:
Next, add the maple syrup (or honey), vanilla extract, milk, and Greek yogurt (if using). Stir everything together until well combined. Make sure the cocoa powder is fully mixed in, so you have a lovely chocolaty base.
3. Stir in the Chocolate Chips:
Gently fold in the mini chocolate chips. This will add little bursts of sweetness and chocolate goodness throughout your oats!
4. Refrigerate:
Cover the jar or bowl tightly with a lid or plastic wrap. Place it in the fridge and let it chill overnight, or for at least 4 hours. The oats will soak up the liquid and soften, becoming ready for a delicious breakfast.
5. Serve:
In the morning, take the mixture out of the fridge and give it a good stir. If you find the oats are too thick for your liking, don’t worry! Just add a splash of milk until you get your desired consistency. It should be creamy and delicious!
6. Add Toppings:
Top your brownie batter overnight oats with extra mini chocolate chips and a sprinkle of granola for a crunch factor. You can also add fresh fruit like bananas or strawberries for an extra burst of flavor!
7. Enjoy!
Dig in! These rich, chocolatey brownie batter overnight oats are an amazing way to start your day. Enjoy every bite of this healthy yet indulgent treat!
Can I Use Instant Oats Instead of Rolled Oats?
While it’s best to use old-fashioned rolled oats for this recipe as they hold their texture well, you can use instant oats in a pinch. Just note that they may result in a mushier consistency, so keep that in mind!
Can I Make These Overnight Oats Vegan?
Absolutely! Simply use plant-based milk and replace Greek yogurt with a dairy-free yogurt alternative. For sweetness, stick with maple syrup instead of honey, and you’re all set!
How Long Do Leftover Oats Last in the Fridge?
Leftover brownie batter overnight oats can be stored in an airtight container in the fridge for up to 3 days. Just give them a good stir before serving, and add a splash of milk if they’ve thickened too much!
Can I Add Other Ingredients to Customize Them?
Definitely! Feel free to add nuts, nut butter, or seeds for extra texture and nutrition. You can also mix in some spices like cinnamon or nutmeg for an added layer of flavor, or even swap the cocoa powder for carob if you prefer!
