Go Back
–+ servings
Peanut Butter Brownie Bars

Irresistible Peanut Butter Brownie Bars with Creamy Frosting

These Peanut Butter Brownie Bars are a delightful fusion of rich chocolate and creamy peanut butter, making them a favorite for any gathering.
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 30 minutes
Cooling Time 30 minutes
Total Time 1 hour 15 minutes
Servings: 16 slices
Course: Desserts
Cuisine: American
Calories: 250
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Brownies
  • 1 box Ghirardelli Double Chocolate Brownie Mix Provides rich chocolate flavor
  • 2 large Eggs Follow package instructions for quantity
  • 1/3 cup Oil Use the amount listed on the package
  • 1 cup Reese's Peanut Butter Chips Can substitute regular peanut butter
For the Topping
  • 1/2 cup Semi-Sweet Chocolate Chips Optional drizzle
  • 1 batch Best Peanut Butter Buttercream Frosting Check separate recipe for preparation

Equipment

  • Oven
  • mixing bowl
  • 13" x 9" Baking Pan
  • Offset Spatula

Method
 

Step-by-Step Instructions
  1. Preheat your oven to 350°F (175°C). In a large mixing bowl, combine the brownie mix, eggs, and oil. Stir in the peanut butter chips.
  2. Pour the brownie batter into a greased 13" x 9" baking pan and bake according to the package instructions for 25-30 minutes.
  3. While the brownies cool, prepare the peanut butter buttercream frosting by beating together softened butter, peanut butter, powdered sugar, and milk until smooth.
  4. Once cooled, spread the frosting generously over the brownies.
  5. Melt semi-sweet chocolate chips and drizzle over the frosted brownies. Allow to cool and harden before cutting.
  6. Slice the bars, serve, and enjoy!

Nutrition

Serving: 1sliceCalories: 250kcalCarbohydrates: 30gProtein: 4gFat: 12gSaturated Fat: 4gPolyunsaturated Fat: 2gMonounsaturated Fat: 5gCholesterol: 30mgSodium: 150mgPotassium: 100mgFiber: 2gSugar: 15gVitamin A: 200IUCalcium: 30mgIron: 1mg

Notes

Allow brownies to cool completely before frosting; this prevents melting and keeps layers intact. Use high-quality chocolate chips for best flavor.

Tried this recipe?

Let us know how it was!