Chunky Monkey Brownies

5 / 5 ( 3 Reviews )
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Chunky Monkey Brownies

Chunky Monkey Brownie Recipe

So it’s official, I’ve gone bananas! I thought coming up with a brownie recipe to share would be quick and easy, but it’s proven to be more difficult than I expected!

I’ve had a million ideas competing in my head, German Chocolate, Rocky Road, Mississippi Mud, Toffee Blondies, all yummy brownies. Inspired by a bowl of over-ripe bananas and mini peanut butter cups in the pantry, my version of Chunky Monkey Brownies, has me swinging through the trees!

I can’t decide, sweet chunks of banana, crunchy peanuts, surprise peanut butter cups, or fudgy frosting, what’s the best part?  Well, let’s not monkey around. Here’s the how-to so you can decide for yourself.

Chunky Monkey Brownies mix

Step 1. Create the Brownie Batter Base

First, prepare your oven by preheating to 350˚F. Then, grease and flour a 9×13-inch pan.

In a medium saucepan, melt together the butter and cocoa. Cool slightly. Mix flour and sugar together. Add the chocolate mixture to the flour and sugar. Start beating and add the eggs one at a time, blending well after each one until batter is smooth.

Adding banana and vanilla to the chunky monkey brownies mix

Step 2. Finish the Batter

Fold in your vanilla and bananas and your batter is ready to go!

Chunky Monkey Brownies with peanut butter cups

Step 3. Preparing for Baking

Pour half the batter into your prepared pan and spread it out, then gently push peanut butter cups into the batter. After that, add the rest of the batter to the pan and spread it out to cover all of the peanut butter cups.

Chunky Monkey Brownies cooked

Step 4. Baking the Chunky Monkey Brownies

Bake at 350˚F for 30-35 minutes. Do not over-bake. Brownies can be slightly sticky to the touch.

Frosting for chunky monkey brownies

Step 5. Adding the Final Touches

While your chunky monkey brownies are hot, make the frosting. It’s easy to make so it shouldn’t take long. Once it’s done, pour it over your hot Chunky Monkey Brownies and sprinkle with chopped dry roasted peanuts.

Finished Chunky Monkey Brownies

Enjoy Your Chunky Monkey Brownies!

With a peanut butter cup surprise in every brownie and delicious banana chunks in each bite, how could you not love these? Let me know what your favorite part of these chunky monkey brownies is!

Also, don’t forget to serve your brownies with a cold glass of milk! Or, if you want to be the ultimate chunky monkey fan, try this banana chocolate chip smoothie!

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Chunky Monkey Brownie on a plate

Chunky Monkey Brownies

Chunky Monkey Brownies

Get ready for a fudgy brownie with chunks of sweet bananas and surprise peanut butter cups in each one. Frosted and topped with chopped peanuts, if you like added crunch, add more chopped dry-roasted peanuts to your batter for a perfect balance of sweet and salty yum...enjoy!
5 / 5 ( 3 Reviews )
Print Rate
Prep Time: 20 minutes
Cook Time: 30 minutes
Total Time: 50 minutes
Serves: 24
Adjust Servings: 24



  • 1 cup butter
  • 5-1/2 Tablespoons cocoa
  • 1-1/2 cups flour
  • 2 cups sugar
  • 4 eggs
  • 1 teaspoon vanilla
  • 3 very ripe bananas split lengthwise and chopped
  • 24 mini peanut butter cups unwrapped



  • Preheat oven to 350˚F/175°C. Grease and flour a 9x13-inch pan. In a medium saucepan, melt together the butter and cocoa. Cool slightly. Mix flour and sugar together. Add the chocolate mixture to the dry ingredients. Mix well and add eggs, one at a time, blending well after each egg until batter is smooth. Fold in vanilla and chopped bananas.
  • Pour half of the batter into prepared pan. Gently push peanut butter cups into the batter. Add the remaining batter and smooth to cover the peanut butter cups. Bake for 30-35 minutes. Do not over-bake, brownies can be slightly sticky to the touch.
  • Quickly make the frosting. In a medium saucepan, combine the butter, cocoa, and milk. Heat to boiling while stirring. Remove from heat and whisk in powdered sugar and vanilla until frosting is smooth. Pour over hot brownies. Sprinkle with chopped peanuts. Cool and cut into 24 brownies.


Calories: 306kcal | Carbohydrates: 35g | Protein: 4g | Fat: 18g | Sodium: 181mg | Fiber: 2g | Sugar: 30g
Ingredients: Banana, Butter, Chocolate, Cocoa Powder, Egg, Flour, Milk, Peanuts, Powdered Sugar, Sugar, Vanilla Extract
Meal Type: Desserts, Father's Day, Mother's Day, Meatless
Categories: Brownies and Bars, Oven

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