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+ servings
Several cosmic brownies

Cosmic Brownies

Course Dessert
Cuisine American
Rich, decadent and delicious brownies topped with a scrumptious ganache frosting. Attention chocolate lovers, these Cosmic Brownies are irresistible!
Prep Time 20 mins
Cook Time 20 mins
Total Time 50 mins
Servings 20 brownies



  • 10 tablespoons unsalted butter
  • 1 1/4 cups granulated sugar
  • 3/4 cup plus 2 tablespoons unsweetened cocoa powder Dutch Process recommended
  • 1/2 teaspoon salt
  • 1 teaspoon baking powder
  • 1 teaspoon pure vanilla extract
  • 2 large eggs room temperature
  • 1/2 cup all-purpose flour
  • 1 cup semi-sweet mini chocolate chips


  • 4 oz semi-sweet chocolate, chopped
  • 4 oz milk chocolate, chopped
  • 1/2 cup heavy cream
  • 1 tbsp room temperature butter, cut into small pieces
  • Sprinkles for garnish


  • Position oven rack in center of oven. Preheat oven to 325ºF Line a 8-inch square pan with parchment or alumni paper. Spray with non-stick cooking spray, then set aside.
  • Place butter in a large, microwave-safe bowl and heat for one minute. If butter is not fully melted after one minute, return to microwave and heat in 15 second bursts until fully melted. Remove bowl from microwave.
  • Add sugar, cocoa powder and salt to the melted butter and mix well to combine. The mixture will likely be dry, that's to be expected. Allow mixture to sit for five minutes to make sure it has cooled prior to adding additional ingredients.
  • After mixture has cooled slightly, add vanilla and mix well. Add room-temperature eggs, one at a time, mixing well after each egg is added. Once both eggs have been added, mix with an electric mixer on medium for 3-5 minutes.
  • In a separate bowl combine flour and baking powder, and stir to combine. Add flour mixture to batter and mix by hand to combine. While we want to avoid over mixing, this batter does need to be stirred well to incorporate all the ingredients. Stirring about 40 strokes with a spoon is a good guide. Fold chocolate chips (or nuts) into the batter and gently stir until combined.
  • Bake for 20 to 25 minutes, until a tester comes out with some moist crumbs attached. Once the center has started to set up and no longer jiggles when you shake the pan, it's time for these brownies to come out to avoid over baking.
  • Allow to cool on a wire rack.


  • To make ganache frosting, place chocolate in a heat safe bowl. Warm heavy cream in a small saucepan on the stove until it just starts to bubble. Take care not to overheat and scald the cream.  Pour hot cream over chocolate in bowl and let sit for approximately 30 seconds, then gently and consistently stir until chocolate all melts. Once chocolate has melted, add in butter and stir until well combined.  Pour chocolate ganache over the top of the chocolate brownies while the brownies are still warm. Brownies need to sit 3-4 hours for ganache to firm up prior to cutting.



Ganache can be made with all semi-sweet or all milk chocolate if desired. Dark chocolate would also work for a less sweet option. 
Store in a covered container. 


Calories: 275kcal | Carbohydrates: 30g | Protein: 3g | Fat: 17g | Saturated Fat: 10g | Cholesterol: 41mg | Sodium: 71mg | Potassium: 199mg | Fiber: 3g | Sugar: 22g | Vitamin A: 295IU | Calcium: 33mg | Iron: 2mg
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