Peanut Butter Frosted Brownies Recipe

Karly Campbell | Buns in my Oven

Peanut Butter Frosted Brownies are decadent and delicious. Combine chocolate and peanut butter in this crazy good way!

Peanut Butter Frosted Brownies Photo

Do we even have times for brownies this time of year? Is that allowed?

All through December, it seems to be all cookies, all the time. Then comes January, it’s like we better not even look at something chocolate, let alone eat it. Well, I'm breaking the rules and I kind of like it!

By the second week of December, I get a little tired of Christmas cookies. I think to myself, hey, I'll go eat a vegetable or something! And then I go in the kitchen and look those vegetables in the face and laugh. I'm sorry, but vegetables grow in the ground. Where it's dirty. So, then I make brownies instead.

What? You don't get tired of one dessert and move on to the next, too? Sure you do! And if you don't, you should!

These brownies are utter perfection. They're an easy one bowl recipe from Alice Medrich and they are the best cocoa brownies I've ever tried.

Peanut Butter Frosted Brownies Picture

I can't just do a plain brownie, though. Boring! I topped these off with some rich, creamy peanut butter frosting. It really takes things over the top. Be sure to smear it on in a nice thick layer, though. I mean, what is life without extra frosting? Especially when it means you’re bringing together that match made in heaven, peanut butter and chocolate.

Let’s be honest – there aren’t many combinations that make you smile like peanut butter and chocolate. So who cares if it’s January and we’re all supposed to be on some sort of diet. Everything in moderation, folks. Because peanut butter frosted brownies are worth their own resolution all together.

We LOVE brownies here on Food Fanatic. Don’t miss our black bean brownies recipechocolate chip shortbread brownies,  and even this healthy brownies recipe packed full of protein. 

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Peanut Butter Frosted Brownies Recipe

    16 Servings


For the Brownies:
  • 10 tablespoons Unsalted Butter
  • 1 1/4 cups Granulated Sugar
  • 3/4 cup Unsweetened Cocoa Powder, plus 2 tablespoons
  • 1/4 teaspoon Salt
  • 1/2 teaspoon Pure Vanilla Extract
  • 2 Eggs
  • 1/2 cup All-Purpose Flour
For the Frosting:
  • 1 cup Peanut Butter
  • 1 cup Powdered Sugar
  • 4 tablespoons Butter
  • 1 teaspoon Pure Vanilla Extract
  • 1/4 teaspoon Salt
  • 1/4 cup Heavy Cream


  1. Preheat oven to 325°F. Line an 8x8 baking pan with parchment. 
  2. Combine the butter, sugar, cocoa powder, and salt in a medium bowl. Set the bowl over a pan of simmering water to make a double boiler. Stir often until the butter is melted and the mixture is well combined. Let cool until the mixture is warm, about 15 minutes.
  3. Stir in the vanilla. Add the eggs one at a time, beating each one into the mixture well. When the mixture is thick and shiny. Stir in the flour just until you can no longer see it.
  4. Bake 20 to 25 minutes, or until a toothpick inserted 1 inch from the edges comes out mostly clean. Cool completely before frosting.
  5. To make the frosting, beat together all of the ingredients in a large bowl until light and fluffy. Add more cream if desired to thin the frosting out a bit or leave it thick and fudgy. 
  6. Spread the frosting over the cooled browneis and cut into 16 squares. 


Cooking Method:
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Related Recipes:
Brownie Recipes, Bar Dessert Recipes, Dessert Recipes, Chocolate Recipes, Peanut Butter Recipes, Baked Recipes
Recipe Yields:
16 brownies
Prep Time:
Cook Time:
Total Time:
Related Post:
Author: Karly Campbell
Recipe Yields: 16 brownies
Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes

Nutrition Facts

Serving Size 1 brownie
Servings Per Recipe 16

Amount Per Serving
Calories from Fat 164
Calories 326

% Daily Value*
Total Fat 21g
  Saturated Fat 7g
Sodium 75mg
Total Carbohydrate 31g
  Dietary Fiber 1g
  Sugars 24g
Protein 6g

* Percent Daily Value are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Nutrition Facts are estimated based on ingredients and data provided by Fat Secret. Please consult a doctor if you have special dietary needs.
Karly Campbell

About Karly

Karly cracks us up on her blog Buns in My Oven, and quite regularly stuns with all kinds of recipes. You'll find her passion for baking, especially Bar Desserts and casseroles, here on Food Fanatic.

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