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Chocolate peanut butter cookies on a cooling rack.

Crumbl Copycat Buckeye Brownie Cookies

Chef Jenn
A bakery-style dessert you can make at home, these Crumbl Copycat Buckeye Brownie Cookies bring together three dreamy layers: fudgy brownie cookie, sweet peanut butter fluff, and rich chocolate ganache.
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Prep Time 20 minutes
Bake Time 12 minutes
Total Time 32 minutes
Course Dessert
Cuisine American
Servings 24 servings
Calories 503 kcal

Equipment

Ingredients
  

For the Brownie Cookie Base:

  • 1 cup unsalted butter melted
  • 1 cup light brown sugar packed
  • ½ cup white granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1 ¾ cups all-purpose flour
  • 1 cup cocoa powder Dutch-processed
  • 1 teaspoon baking soda
  • 1 teaspoon salt omit if using salted butter
  • 2 cups semi-sweet chocolate chips

For the Peanut Butter Layer:

  • ½ cup unsalted butter softened
  • 1 cup creamy natural peanut butter no added oils
  • 2 cups powdered sugar
  • 1 teaspoon vanilla extract

For the Ganache:

  • 2 cups semi-sweet chocolate chips
  • ¾ cup heavy cream at room temperature

Instructions
 

  • Preheat the oven to 350°F and prepare your baking sheets with parchment paper.
  • Mix melted butter with both sugars, then beat in eggs and vanilla.
  • Whisk dry ingredients separately, then combine with the wet mixture. Stir in chocolate chips.
  • Scoop dough, place 2 inches apart, and bake 11–12 minutes. Let cool fully.
  • Make the filling by beating together butter, peanut butter, vanilla, and powdered sugar until fluffy.
  • For the ganache, microwave chocolate chips and cream until smooth, stirring between bursts.
  • Spread peanut butter mixture over cooled cookies, then top with ganache. Let rest before serving.

Notes

Chef Jenn’s Tips

  • Prefer a bit of crunch? Use crunchy peanut butter for added texture.
  • Top each cookie with a sprinkle of flaky sea salt for a sophisticated touch.
  • Chill the cookies for 20 minutes after the peanut butter layer to help it hold up under the ganache.

Nutrition

Serving: 1cookieCalories: 503kcalCarbohydrates: 51gProtein: 7gFat: 32gSaturated Fat: 17gPolyunsaturated Fat: 2gMonounsaturated Fat: 10gTrans Fat: 0.5gCholesterol: 56mgSodium: 205mgPotassium: 324mgFiber: 4gSugar: 35gVitamin A: 501IUVitamin C: 0.04mgCalcium: 48mgIron: 3mg
Keyword Buckeye brownie cookies, chocolate peanut butter cookies, Crumbl-style desserts
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