Go Back
–+ servings
Rich and fudgy Cosmic Brownie Recipe featuring a gooey chocolate center, smooth chocolate frosting, and vibrant candy-coated sprinkles. This homemade brownie is chewy, decadent, and perfect for chocolate lovers looking for an easy baking recipe!

Easy Cosmic Brownie Recipe

No ratings yet
Rich, fudgy Cosmic Brownie Recipe topped with silky chocolate ganache and rainbow chips – this homemade version of the classic Little Debbie treat is even better than the original!
Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 12 brownies
Course: Dessert
Cuisine: American
Calories: 425
Ingredients Equipment Method Nutrition Notes

Ingredients
  

Brownie Base
  • 2 cups granulated sugar
  • 1 cup unsalted butter melted
  • 4 large eggs room temperature
  • 2 teaspoons vanilla extract
  • 1 cup unsweetened cocoa powder
  • 1 cup all-purpose flour
  • ½ teaspoon salt
  • ¼ teaspoon baking powder
Chocolate Ganache
  • 1 cup semi-sweet chocolate chips
  • ½ cup heavy cream
  • 2 tablespoons corn syrup
  • 1 tablespoon unsalted butter
Topping
  • ½ cup rainbow chip sprinkles or M&M Minis

Equipment

  • 9x13-inch baking pan
  • Parchment paper
  • Large mixing bowl
  • Whisk
  • Rubber spatula
  • Double boiler or microwave-safe bowl
  • Offset spatula for spreading ganache

Method
 

Brownies
  1. Preheat oven to 350°F. Line 9x13" pan with parchment.
  2. Mix melted butter and sugar until combined.
  3. Whisk in eggs one at a time, then vanilla.
  4. Sift together cocoa, flour, salt, and baking powder.
  5. Fold dry ingredients into wet until just combined.
  6. Pour into pan, spread evenly.
  7. Bake 25-30 minutes until set but still fudgy.
  8. Cool completely.
Ganache & Assembly
  1. Heat cream until simmering.
  2. Pour over chocolate chips, let sit 2 minutes.
  3. Stir until smooth, add corn syrup and butter.
  4. Pour over cooled brownies, spread evenly.
  5. Top with rainbow chips.
  6. Refrigerate 30 minutes until set.

Nutrition

Calories: 425kcalCarbohydrates: 56gProtein: 5gFat: 22gSaturated Fat: 13gTrans Fat: -2gCholesterol: 95mgSodium: 180mgPotassium: 185mgFiber: 2gSugar: 42gVitamin A: 450IUCalcium: 45mgIron: 2.5mg

Notes

  • Use room temperature ingredients
  • Don't overbake
  • Chill before cutting
  • Store in airtight container up to 1 week
  • Freezes well up to 3 months

Tried this recipe?

Let us know how it was!