Katzen's Chocolate Peanut Butter Brownies Recipe

Indulge in decadent Katzen's Chocolate Peanut Butter Brownies! This recipe, born from a happy accident of extra peanut butter and peanut butter chips, delivers intensely rich chocolate brownies swirled with creamy peanut butter and studded with crunchy peanut butter chips. Even the pickiest eaters will be raving about these unbelievably delicious brownies—guaranteed to be a crowd-pleaser! Get ready for the ultimate chocolate peanut butter experience.

Prep Time 20 mins
Cook Time 60 mins
Calories 417.6 kcal
Protein 15g
Rating Be the first
Katzen's Chocolate Peanut Butter Brownies 35

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Forktionary editorial kitchen team

The Forktionary Kitchen Team

Adapted from Food.com, then tested & standardized by Forktionary.

Ingredients for Katzen's Chocolate Peanut Butter Brownies

  • 1 cup (2 sticks) unsalted butter
  • 2 cups granulated sugar
  • 1 teaspoon vanilla extract
  • 4 large eggs
  • ¾ cup unsweetened cocoa powder
  • All Purpose Flour
  • 1 ½ teaspoons baking powder
  • ½ teaspoon salt
  • 1 cup chopped peanuts
  • 2 cups peanut butter chips (1 cup for batter, ½ cup for topping)
  • ½ cup peanut butter
  • 2 cups powdered sugar
  • ¼ cup milk + more as needed
  • Vanilla Extract

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How to Make Katzen's Chocolate Peanut Butter Brownies

  1. Preheat oven to 350°F (175°C). Grease a 13x9 inch baking pan.
  2. In a microwave-safe bowl, melt 1 cup (2 sticks) unsalted butter.
  3. Stir in 2 cups granulated sugar and 1 teaspoon vanilla extract.
  4. Beat in 4 large eggs, one at a time, until well combined.
  5. In a separate bowl, whisk together ¾ cup unsweetened cocoa powder, 1 ½ cups all-purpose flour, 1 ½ teaspoons baking powder, and ½ teaspoon salt.
  6. Gradually add the dry ingredients to the wet ingredients, beating until just combined. Do not overmix.
  7. Stir in 1 cup chopped peanuts and 1 cup peanut butter chips.
  8. Pour batter into the prepared pan.
  9. In a separate microwave-safe bowl, melt ½ cup peanut butter in the microwave for about 20 seconds, or until softened.
  10. Drop spoonfuls of the melted peanut butter over the brownie batter. Alternatively, pour it over and swirl with a knife to create a marble effect. Ensure the knife cuts through both the peanut butter and brownie batter to create swirls.
  11. Bake for 30-35 minutes, or until a toothpick inserted into the center comes out with moist crumbs.
  12. Let cool completely in the pan before frosting.
  13. For the frosting: Melt ¼ cup unsalted butter in a microwave-safe bowl.
  14. Stir in ½ cup unsweetened cocoa powder.
  15. Add 2 cups powdered sugar and ¼ cup milk. Beat on medium speed until smooth and spreadable. Add more milk, 1 tablespoon at a time, if needed to reach desired consistency.
  16. Spread frosting evenly over cooled brownies and sprinkle with ½ cup peanut butter chips.

Nutrition Information (Approximate per serving)

Sodium

9 g

Sugar

146g

Fat

51g

Carbs

15g

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Frequently Asked Questions

How long does it take to make Katzen's Chocolate Peanut Butter Brownies?

Katzen's Chocolate Peanut Butter Brownies takes about 80 minutes from start to finish — roughly 20 minutes to prepare and 60 minutes to cook.

How many calories are in Katzen's Chocolate Peanut Butter Brownies?

Katzen's Chocolate Peanut Butter Brownies has approximately 417.6 calories per serving, with about 15 g protein, 15 g carbohydrates and 35 g fat.

What ingredients do I need for Katzen's Chocolate Peanut Butter Brownies?

The key ingredients for Katzen's Chocolate Peanut Butter Brownies are Butter, Sugar, Vanilla, Eggs, Cocoa, All Purpose Flour. See the full list with measurements above.

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