Peanut Butter Brownie Baked Oatmeal
Peanut Butter Brownie Baked Oatmeal is the ultimate fusion of comfort and indulgence, combining the rich chocolatey goodness of brownies with the wholesome satisfaction of oatmeal. This recipe is both simple and delightful, making it a fantastic option for breakfast or a sweet afternoon snack. Each bite delivers a warm, fudgy taste that’s punctuated with creamy peanut butter and pockets of melty chocolate—pure bliss in a bowl! You won’t find this kind of joy with anything store-bought, and trust me, your kitchen will be filled with an irresistible aroma as it bakes.
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When I first made this dish, it was one of those moments that sparked joy. With the winter chill settling in, I craved something cozy yet satisfying. Enter Peanut Butter Brownie Baked Oatmeal, which not only met but exceeded my expectations. It’s perfect for serving a crowd or storing for busy mornings when you need a quick bite. I can’t wait for you to try it and see how it quickly becomes a beloved staple in your home!
Why You’ll Love This Recipe
- Simple & Quick: This dish takes just about an hour from start to finish, perfect for a stress-free breakfast or dessert!
- Irresistible Flavor: The combination of bananas, chocolate, and nutty peanut butter creates a mouthwatering taste that resonates with everyone.
- Eye-Catching Appeal: With its rich earthy tones and chocolate chips sprinkled on top, this baked oatmeal is as beautiful as it is delicious.
- Flexible Serving: Enjoy it warm from the oven or cold as a snack—great for any time of day!
- Diet-Friendly Options: Vegan and naturally sweetened, this recipe caters to many dietary preferences.

Ingredients You’ll Need
- 2 2/3 cups over ripe mashed bananas: These add natural sweetness and moisture, acting as a healthy binder. If you don’t have ripe bananas, you can bake unripe ones until soft to speed up the process.
- 1/3 cup creamy peanut butter: Choose a high-quality peanut butter for a richer taste. You can swap it for almond butter or sunflower seed butter if needed.
- 1 cup chocolate almond milk: This nutty milk complements the chocolate flavor. You can use any plant-based milk or regular milk if you prefer.
- 1/4 cup pure maple syrup: This natural sweetener brings warmth and depth. Agave syrup or honey can also work as substitutes.
- 2 1/2 tsp vanilla extract: Always opt for pure vanilla for the best flavor—there’s no comparison to imitation.
- 3 cups rolled oats: Use old-fashioned rolled oats for texture. Quick oats may make it too mushy.
- 1/2 cup cocoa powder: Unsweetened is best; it provides the essential chocolate flavor that brings this baked oatmeal to life.
- Mini-vegan chocolate chips: These are delightful when melted into the oats. If you prefer, you can use dark chocolate chips or even chopped chocolate bars.
How to Make Peanut Butter Brownie Baked Oatmeal
Preheat the Oven: Start by preheating your oven to 350°F (175°C). This prepares it for the magic that’s about to happen!
Mash the Bananas: In a large bowl, mash enough over ripe bananas to yield 2 2/3 cups. The riper the bananas, the sweeter they will be, ensuring your baked oatmeal has that luscious taste.
Combine the Wet Ingredients: Next, add the mashed bananas, 1/3 cup creamy peanut butter, 1 cup chocolate almond milk, 1/4 cup pure maple syrup, and 2 1/2 tsp vanilla extract. Mix everything until it’s well combined and smooth.
Mix in the Dry Ingredients: Now, incorporate the 3 cups rolled oats and 1/2 cup cocoa powder into your banana mixture. Stir until everything is fully combined—this dough should be thick but moist and chocolaty.
Spread in the Pan: Pour your batter into a 9 x 13 inch pan that you’ve generously sprayed with non-stick spray. Use a spatula to spread it evenly, making sure it reaches the corners for even baking.
Add Chocolate Chips: Sprinkle mini-vegan chocolate chips over the top, adjusting the amount according to how indulgent you want it to be. You can never really have too many chocolate chips, right?
Bake and Set: Bake for 30 minutes, then turn off the oven but leave the pan inside for an additional 20 minutes. This helps create a beautifully fudgy texture while solidifying the edges.
Cool Down: After the additional baking time, remove it from the oven and allow it to cool. If you want to take it up a notch, drizzle some melted peanut butter over the top!

Storing & Reheating
To enjoy your Peanut Butter Brownie Baked Oatmeal throughout the week, store it at room temperature in an airtight container for up to two days. Alternatively, refrigerate it for up to a week. If you want to freeze it, cut it into squares and wrap each piece tightly in plastic wrap before placing them in a freezer-safe bag. It can last for up to three months. When you’re ready to enjoy another square, simply reheat it in the microwave for about 30-45 seconds. You may notice slightly altered texture, but a splash of plant milk can help revive it to its original glory!
Chef’s Helpful Tips
- Make sure your bananas are truly overripe for maximum sweetness and moisture.
- For an extra decadent treat, feel free to add chopped nuts or seeds to the mix.
- Monitor your baking time closely; checking for a “just firm” center ensures that it won’t dry out.
- If it’s too dry after baking, consider adding a bit more almond milk into the batter next time to achieve desired consistency.
- This recipe is great for meal prep; consider making a double batch and freezing half for future mornings.
Peanut Butter Brownie Baked Oatmeal is a crowd-pleaser that combines flavors and textures harmoniously, and the joy of preparation makes it even sweeter. Whether it’s for breakfast, an energizing snack, or dessert, this recipe truly meets all the cravings. Feel free to get creative with toppings and serve it your way. I can hardly wait for you to make it and taste the wholesome goodness!
Recipe FAQs
Can I use other nut butters instead of peanut butter?
Absolutely! Almond butter or sunbutter work wonderfully and will change the flavor while still being delicious. Just ensure that the alternative is a smooth variety to maintain the texture.
How should I adjust the recipe for dietary restrictions?
If you’re looking for a gluten-free option, ensure you use certified gluten-free oats. For a nut-free treat, feel free to swap peanut butter for sunflower seed butter. It’s a fully adaptable recipe!
Can I make this ahead of time?
Yes, you can prepare the batter a day in advance. Just cover it and refrigerate, then bake it fresh in the morning. It will still taste amazing, and you’ll appreciate the time savings!
What can I serve with this baked oatmeal?
It’s delightful on its own but pairs wonderfully with fresh fruits like bananas or strawberries. A dollop of vegan yogurt or an extra drizzle of maple syrup can elevate it even more!
Don’t hesitate to step into your kitchen, get those ingredients together, and treat yourself to this wonderful recipe. It’s comfort in a bowl, ready to be enjoyed!
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📖 Recipe Card

Peanut Butter Brownie Baked Oatmeal
- Prep Time: N/A
- Cook Time: 60 minutes
- Total Time: 0 hours
- Yield: 12 servings 1x
- Category: Breakfast
- Method: Baking
- Cuisine: American
Description
This Peanut Butter Brownie Baked Oatmeal combines the delightful flavors of chocolate and peanut butter, offering an enticing and wholesome breakfast or snack option. With simple ingredients like ripe bananas, cocoa powder, and creamy peanut butter, it’s perfect for meal prep and satisfying cravings for something sweet and hearty.
Ingredients
- 2 2/3 cups over ripe mashed bananas
- 1/3 cup creamy peanut butter
- 1 cup chocolate almond milk
- 1/4 cup maple syrup
- 2 1/2 tsp vanilla extract
- 3 cups rolled oats
- 1/2 cup cocoa powder
- mini-vegan chocolate chips
Instructions
- Preheat the oven to 350°F (175°C). Prepare a 9 x 13 inch pan with non-stick spray.
- Mash enough over ripe bananas to measure 2 2/3 cups.
- In a large bowl, combine mashed bananas, creamy peanut butter, chocolate almond milk, maple syrup, and vanilla extract.
- Mix the ingredients thoroughly until well combined.
- Stir in rolled oats and cocoa powder until fully incorporated.
- Spread the mixture evenly into the prepared pan.
- Sprinkle mini vegan chocolate chips on top as desired.
- Bake for 30 minutes, then turn off the oven and let them sit inside for an additional 20 minutes.
- Once time is up, take it out of the oven and allow to cool.
- Optional: Drizzle melted creamy peanut butter over the cooled oatmeal before serving.
Notes
For added sweetness, consider adjusting the maple syrup amount based on your preference.
Feel free to substitute the chocolate almond milk with regular almond milk or any milk of choice.
Store leftovers in an airtight container for up to 5 days.
Nutrition
- Serving Size: 1 square
- Calories: 180
- Sugar: 8g
- Sodium: 150mg
- Fat: 5g
- Saturated Fat: 1g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 5g
- Protein: 4g
- Cholesterol: 0mg
