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A rich chocolate brownie slice topped with peanut butter frosting and chopped peanut butter cups, demonstrating a Box Mix Glow-Up.

Box Mix Glow-Up: Fancy Finishes

Transform a simple box mix into a gourmet dessert with this easy recipe. Add a creamy peanut butter soak and decadent frosting for a cake that impresses with minimal effort.
Prep Time 20 minutes
Cook Time 35 minutes
Refrigeration Time 3 hours
Total Time 3 hours 55 minutes
Servings: 12 pieces
Course: Dessert
Cuisine: American
Calories: 360

Ingredients
  

For the Cake
  • 1 package chocolate cake mix (regular size) Prepare according to package directions
  • 1 teaspoon vanilla extract for batter
  • 1 dash salt
For the Peanut Butter Soak
  • 2/3 cup creamy peanut butter
  • 2 cans (14 ounces each) sweetened condensed milk
For the Frosting
  • 1 teaspoon vanilla extract remaining
  • 1 cup confectioners' sugar adjust for spreading consistency
For the Toppings
  • 1 cup chopped peanut butter-filled sandwich cookies or peanut butter cups, or a combination

Equipment

  • 13x9-inch baking pan
  • Mixing bowls
  • Whisk
  • Wooden spoon

Method
 

  1. Preheat your oven to 350°F (175°C). Prepare the chocolate cake mix according to the package directions. Add 1 teaspoon of vanilla extract and a dash of salt to the batter before mixing. Pour the batter into a greased 13x9-inch baking pan. Bake and cool the cake completely as directed on the package.
  2. While the cake cools, whisk together the creamy peanut butter and sweetened condensed milk until well blended. This is your peanut butter soak.
  3. Once the cake is completely cool, use the end of a wooden spoon handle to poke holes in the cake, spacing them about 2 inches apart. Slowly pour 2 cups of the peanut butter mixture over the cake, ensuring it fills each hole.
  4. Cover the cake and the remaining peanut butter mixture. Refrigerate both for 2 to 3 hours, or until the cake is thoroughly chilled.
  5. To make the frosting, combine the remaining 1 teaspoon of vanilla extract with the reserved peanut butter mixture. Gradually beat in the confectioners' sugar until you reach a spreadable consistency. You may need to add a little more or less sugar depending on your desired thickness.
  6. Spread the frosting evenly over the chilled cake. Sprinkle your desired toppings, such as chopped peanut butter-filled sandwich cookies or peanut butter cups, over the frosting.
  7. Refrigerate any leftovers.

Nutrition

Calories: 360kcalCarbohydrates: 49gProtein: 7gFat: 16gSaturated Fat: 4gCholesterol: 41mgSodium: 312mgFiber: 1gSugar: 40g

Notes

This recipe is a fantastic way to elevate a standard box cake mix. The peanut butter soak adds moisture and a rich flavor, while the simple frosting and cookie toppings provide a delightful finish. Feel free to experiment with different cake flavors or toppings to create your own unique variations.

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