Creamy overnight oats mixed with rich brownie batter for a delicious breakfast treat.

Brownie Batter Overnight Oats

Brownie Batter Overnight Oats are like a little morning treat that feels like dessert but gives you a healthy start to the day. Imagine thick, creamy oats soaked overnight, blended…

By Alina Reading time: 6 min
Tip: save now, cook later.

Brownie Batter Overnight Oats are like a little morning treat that feels like dessert but gives you a healthy start to the day. Imagine thick, creamy oats soaked overnight, blended with chocolatey cocoa, a hint of sweetness, and that rich, fudgy flavor that reminds you of brownie batter—without turning on the oven!

I love making these oats the night before because all the flavors get to mix together and create something really special by morning. It feels like a tiny celebration when I peel back the lid and see that thick, chocolaty goodness waiting for me. Sometimes, I sprinkle a few chocolate chips or a dollop of nut butter on top just to make it even more delicious.

This recipe is perfect when you want something quick to grab and go but also a little indulgent in a good way. I often make a batch for busy mornings or on weekends when I want to start slow but still enjoy a yummy breakfast. It’s one of those breakfasts that makes waking up a little sweeter and even more satisfying.

Key Ingredients & Substitutions

Rolled oats: These create the creamy, chewy base. Old-fashioned rolled oats work best—they soak up the liquid nicely without turning mushy. If you’re short on time, quick oats can work but texture changes a bit.

Cocoa powder: Unsweetened cocoa gives that rich chocolate flavor. Dutch-processed cocoa makes it smoother and darker, but natural cocoa works fine too. You can adjust the amount for a lighter or stronger chocolate taste.

Chia seeds: These thicken the oats and add extra fiber and omega-3s. If you don’t have chia, ground flaxseeds do a similar job, though chia gives a better gel-like texture.

Sweetener: Maple syrup adds a gentle sweetness and pairs well with chocolate. Honey or agave syrup are good alternatives. If avoiding sweeteners, you can leave it out or add mashed banana for natural sweetness.

Milk: Dairy milk makes it creamy, but any plant-based milk (like almond, oat, or coconut) works and changes the flavor slightly. Choose unsweetened versions to control sugar levels.

Greek yogurt (optional): Adds creaminess and tang. Use plain or dairy-free yogurt if preferred. Skipping it will give a looser texture but still tasty overnight oats.

Chocolate chips & toppings: Chocolate chips bring in extra bursts of chocolate flavor and little melty pockets. You can swap with mini peanut butter chips, chopped nuts, or seeds. Shredded coconut adds a nice texture and subtle sweetness.

How Do I Make My Overnight Oats Thick and Creamy?

The secret to perfect overnight oats is the soak and the right mix of ingredients. Here’s how to get that creamy, pudding-like texture:

  • Use rolled oats, not instant or steel-cut, for the best soak and texture.
  • Mix in chia seeds or flaxseeds—they absorb liquid and thicken the oats overnight.
  • Include a creamy element like Greek yogurt or use a creamier milk to boost richness.
  • Make sure to stir everything well before letting it rest in the fridge; this helps distribute flavors and thicken evenly.
  • Don’t add too much milk upfront—start with less and thin it out in the morning if you want a looser texture.

I like to give the oats a good stir the next day before eating, which helps with creaminess and blends the flavors. If you want extra richness, a spoonful of nut butter stirred in right before serving is a great add-on.

Equipment You’ll Need

  • Mason jars or small jars – perfect for mixing and storing your oats overnight. They keep everything contained and make grab-and-go easy.
  • Measuring cups and spoons – to get the right oat-to-liquid ratio and cocoa powder amount for that perfect brownie flavor.
  • Spoon or small whisk – helps mix everything evenly, especially the cocoa powder and chia seeds.
  • Refrigerator – essential to let the oats soak and thicken overnight.

Flavor Variations & Add-Ins

  • Add a spoonful of peanut butter or almond butter for a nutty twist that pairs well with chocolate.
  • Swap chocolate chips for white chocolate or butterscotch chips for a sweeter, different flavor.
  • Mix in fresh or frozen raspberries to add tartness and a pop of color.
  • Try a sprinkle of cinnamon or a pinch of cayenne for warm spice or a subtle kick.

Delicious Brownie Batter Overnight Oats

How to Make Brownie Batter Overnight Oats?

Ingredients You’ll Need:

Main Ingredients:

  • 1/2 cup rolled oats
  • 1 tablespoon cocoa powder (unsweetened)
  • 1 tablespoon chia seeds
  • 1 tablespoon maple syrup or honey
  • 1/4 teaspoon vanilla extract
  • 1/2 cup milk (dairy or plant-based)
  • Pinch of salt
  • 2 tablespoons Greek yogurt or dairy-free yogurt (optional)
  • 2 tablespoons chocolate chips (plus extra for topping)

Optional Toppings:

  • Shredded coconut
  • Strawberries or other fresh fruit

How Much Time Will You Need?

This recipe requires about 5 minutes to prepare and then needs to chill in the fridge overnight or for at least 6 hours. The soaking time lets the oats soften and absorb the flavors, making a creamy and delicious breakfast ready to go in the morning.

Step-by-Step Instructions:

1. Combine the Dry Ingredients:

In a mason jar or bowl, mix together the rolled oats, unsweetened cocoa powder, chia seeds, maple syrup or honey, vanilla extract, and a pinch of salt. Stir well to make sure everything is evenly combined.

2. Add the Milk and Yogurt:

Pour in your choice of milk and add Greek yogurt if using. Mix until the texture is smooth and all ingredients are well blended.

3. Stir in Chocolate Chips and Refrigerate:

Fold in the chocolate chips, saving some to sprinkle on top later. Cover your jar or bowl tightly and place it in the refrigerator overnight (or for at least 6 hours) to let the oats soak and thicken.

4. Serve and Enjoy:

In the morning, give your overnight oats a good stir. If you’d like a thinner consistency, add a splash more milk. Top with additional chocolate chips, shredded coconut, and fresh strawberries or your favorite fruit. Now enjoy your creamy, chocolatey “brownie batter” breakfast!

Can I Use Different Types of Oats?

Yes! Rolled oats work best for overnight oats because they absorb liquid well without becoming mushy. Quick oats can be used in a pinch, but the texture will be softer, and steel-cut oats aren’t recommended as they take much longer to soften.

Can I Make This Recipe Vegan?

Absolutely! Use a plant-based milk like almond, oat, or coconut milk, and swap Greek yogurt for a dairy-free yogurt alternative. Also, make sure to choose vegan-friendly chocolate chips.

How Long Can I Store Overnight Oats?

You can keep them in the fridge for up to 3 days. Just give the oats a good stir before eating, and add a splash of milk if they’ve thickened too much.

Can I Adjust the Sweetness?

Yes! Feel free to add more or less maple syrup or honey according to your taste. You can also add mashed banana for natural sweetness and extra creaminess.

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