Brownie Batter Overnight Oats

Brownie Batter Overnight Oats are a sweet and simple breakfast treat that feels like a dessert in a jar. They mix creamy oats with chocolatey brownie batter flavor, giving you…

By Willow • December 31, 2025 • Reading time: 6 min

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Brownie Batter Overnight Oats are a sweet and simple breakfast treat that feels like a dessert in a jar. They mix creamy oats with chocolatey brownie batter flavor, giving you a soft, rich texture and a hint of cocoa that’s just right. It’s a fun twist on regular overnight oats that makes mornings feel a little more special.

I love making these the night before because all the flavors get to blend together, making the oats soft and chocolatey without any baking needed. Plus, it’s a great way to satisfy a chocolate craving early in the day without going overboard. I usually add a little bit of cocoa powder and vanilla, and sometimes throw in chocolate chips, because why not?

These oats are perfect on busy mornings when I want something quick but tasty. I like to top mine with fresh berries or a spoonful of peanut butter for a bit of extra flavor and texture. It’s like starting the day with a brownie that’s actually good for you. Give it a try and see how breakfast can be delicious and easy!

Key Ingredients & Substitutions

Rolled Oats: These give great texture and soften overnight. If you only have quick oats, they work too, but the texture will be softer and less chewy.

Cocoa Powder: Unsweetened cocoa adds that strong chocolate flavor without extra sugar. Natural or Dutch-processed cocoa both work fine here.

Chia Seeds: These thicken the oats and add fiber. You can skip them if you don’t have any; the oats will still get creamy but a bit looser.

Milk & Yogurt: Use any milk you like—dairy or plant-based. Greek yogurt makes it extra creamy, but if you want it dairy-free, swap with coconut or almond yogurt.

Sweetener: Maple syrup gives a natural sweetness and pairs well with chocolate. Honey or agave syrup work just as well.

Chocolate Chips & Toppings: Mini chocolate chips add bursts of melty chocolate. For a twist, try chopped nuts or a dollop of nut butter on top instead.

How Do I Get the Perfect Texture for Overnight Oats?

Getting the oats to be soft but not mushy is key. Here’s what helps:

• Use rolled oats—they soak up liquid slowly and keep a nice bite.
• Add chia seeds if you want extra thickness; they absorb liquid well overnight.
• Mix everything really well so cocoa and sweetener blend evenly.
• Let it chill at least 4 hours, but preferably overnight.
• If it’s too thick in the morning, stir in a little milk to loosen it up.

Following these tips ensures creamy, delicious oats that taste like brownie batter, just right for breakfast.

Equipment You’ll Need

• Mason jar or airtight container – perfect for mixing and storing your oats overnight without spills.
• Measuring cups and spoons – help you get the right amounts of cocoa, oats, and sweeteners.
• Mixing bowl or jar – easy for stirring all ingredients together before chilling.
• Spoon – for mixing and later enjoying your overnight oats straight from the jar.

Flavor Variations & Add-Ins

• Add peanut butter or almond butter for a nutty twist that pairs well with chocolate.
• Stir in a scoop of protein powder to boost your breakfast’s staying power.
• Swap strawberries for raspberries or bananas for different fruity flavors.
• Mix in cinnamon or a pinch of espresso powder to deepen the chocolate taste.

How to Make Brownie Batter Overnight Oats

Ingredients You’ll Need:

For The Base:

• ½ cup old-fashioned rolled oats
• 1 tablespoon unsweetened cocoa powder
• 1 tablespoon chia seeds (optional for thickness and nutrition)
• A pinch of salt

For The Liquid & Flavor:

• 1-2 tablespoons maple syrup or honey (to taste)
• ½ teaspoon vanilla extract
• ½ cup milk (dairy or plant-based such as almond, oat, or soy)
• 2 tablespoons Greek yogurt or plant-based yogurt (for creaminess)

For The Add-Ins and Toppings:

• 1-2 tablespoons mini chocolate chips (plus extra for topping)
• Fresh strawberries, halved (for topping)
• Shredded coconut flakes (optional, for garnish)

How Much Time Will You Need?

This recipe takes about 5-10 minutes to prepare the mixture. After mixing, the oats need to chill in the fridge overnight or at least 4 hours to soak and thicken. It’s an easy recipe that you can prepare the night before for a ready-to-eat, delicious breakfast in the morning.

Step-by-Step Instructions:

1. Combine Dry Ingredients

In a mixing bowl or a jar, stir together the rolled oats, cocoa powder, chia seeds (if using), and a pinch of salt. This ensures the cocoa and chia are evenly distributed with the oats.

2. Add Liquids and Flavor

Pour in the maple syrup or honey, vanilla extract, milk, and Greek yogurt. Stir everything thoroughly until all the oats are coated, and the mixture is smooth.

3. Mix in Chocolate Chips

Gently fold in the mini chocolate chips for little pockets of melty chocolate throughout.

4. Chill to Set

Cover the jar or bowl and place it in the refrigerator overnight (or at least 4 hours). During this time, the oats and chia seeds absorb the liquids, softening and thickening into a creamy texture.

5. Serve and Garnish

Give the oats a good stir in the morning. If you prefer a thinner consistency, add a little milk. Top with additional chocolate chips, fresh strawberry halves, and a sprinkle of shredded coconut flakes for a pretty and tasty finish. Enjoy your brownie batter overnight oats right from the jar or in a bowl.

Can I Use Frozen Fruit Instead of Fresh Strawberries?

Yes, you can! Just thaw the frozen strawberries before adding them as a topping to avoid extra moisture making the oats watery.

Can I Make This Recipe Vegan?

Absolutely! Use plant-based milk and yogurt, and choose maple syrup or another vegan sweetener instead of honey to keep it completely vegan.

How Long Can I Store Overnight Oats?

Store your brownie batter overnight oats in an airtight container in the fridge for up to 3-4 days. Give it a good stir and add a splash of milk before eating if needed.

Can I Add Protein Powder to This Recipe?

Yes! Mix in a scoop of your favorite protein powder with the wet ingredients to boost the protein content without changing the flavor much.