Peanut Butter Chocolate Brownies Recipe

Karly Campbell | Buns in my Oven

Peanut Butter Chocolate Brownies with Marshmallow aren't to be missed. Decadence personified!

Peanut Butter Chocolate Brownies Photo
You know what my favorite thing about a box of brownie mix is? The possibilities. 
I mean, sure. You could make some plain old brownies with that box of mix. Or you could add every possible good thing in life to that box of brownie mix and create something magical. (Sort of like I did with these Cadbury Creme Egg Brownies!)
Peanut Butter Chocolate Brownies Picture
This time around, I topped my brownies with plenty of chocolate chips and mini marshmallows. Then I went all crazy and created an easy peanut butter sauce to drizzle daintily over the top. And, okay, whatever. There was nothing dainty about it. I basically just dumped on as much sauce as possible and then buried my face in the pan of gooey goodness.

Are you tired of the dinner routine?

Stuck in a rut or looking for fun new recipes to try?

Our Facebook Group is growing every day! If you haven’t joined yet, we invite you to come check it out and join the fun.


You can ask for recipe ideas, talk about cooking techniques, or get help figuring out the right new pan set for you. If you’ve already joined, invite a friend along!


Peanut Butter Chocolate Brownies Recipe

    12 Servings


  • 1 box Brownie Mix
  • 1 cup Milk Chocolate Chips, (I used milk)
  • 1 cup Miniature Marshmallows
  • 1/4 cup Crunchy Peanut Butter
  • 1/4 cup Caramel Topping


  1. Prepare the brownie mix according to package instructions. Bake as directed. Five minutes before brownies are finished baking, remove from the oven. 
  2. Top with the chocolate chips and marshmallows. Return to the oven to finish baking.
  3. While the brownies are baking for the last five minutes, add the peanut butter and caramel to a microwave safe bowl. Microwave for 1-2 minutes, stirring every 30 seconds, until the peanut butter has melted into the caramel sauce. Stir well.
  4. Drizzle the peanut butter sauce over the baked brownies. Cool completely before cutting and serving. 
Cooking Method:
, , , , , ,
Related Recipes:
Brownie Recipes, Chocolate Recipes, Peanut Butter Recipes, Bar Dessert Recipes, Dessert Recipes, Easy Recipes, Baking Recipes
Recipe Yields:
12 brownies
Prep Time:
Cook Time:
Total Time:
Related Post:
Author: Karly Campbell
Recipe Yields: 12 brownies
Prep Time: 10 minutes
Cook Time: 30 minutes
Total Time: 40 minutes

Nutrition Facts

Serving Size 1 brownie
Servings Per Recipe 12

Amount Per Serving
Calories from Fat 73
Calories 301

% Daily Value*
Total Fat 9g
  Saturated Fat 3g
Sodium 167mg
Total Carbohydrate 54g
  Dietary Fiber 3g
  Sugars 41g
Protein 4g

* 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.

Show Comments