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Homemade Cosmic Brownies

Jessie M
Homemade cosmic brownies are better than store bought! Chewy brownies, topped with fudgy chocolate ganache, and candied chocolate chips.
5 from 1 vote
Prep Time 20 minutes
Cook Time 28 minutes
Chill Time 2 hours
Course dessert
Cuisine American, Canadian
Servings 16 brownies


  • 8x8 square baking pan
  • sifter


Brownie Batter

  • 4 oz semi sweet bakers chocolate melted
  • 1/2 C salted butter melted
  • 1 C white sugar
  • 2 large eggs at room temperature
  • 2 tsp vanilla extract
  • 3/4 C all purpose flour spooned and levelled*
  • 1/4 C unsweetened cocoa powder
  • 1/4 tsp salt
  • 1 C semi sweet chocolate chips

Chocolate Ganache

  • 1 C semi sweet chocolate chips
  • 6 tbsp heavy cream
  • 1/8 C mini candy covered chocolate chips


  • Preheat oven to 350F and line a 8×8 inch square baking pan with parchment paper.

Brownie Batter

  • Chop and melt the bakers chocolate in the microwave. Do this by microwaving in 20 second increments and stirring in between. Set aside.
    4 oz semi sweet bakers chocolate
  • In a large mixing bowl combine melted butter and sugar and whisk by hand until smooth.
    1/2 C salted butter, 1 C white sugar
  • Add in the eggs and vanilla. Vigorously whisk until mixture is light and colour and has volume. This usually takes a good 5 minutes.
    2 tsp vanilla extract, 2 large eggs
  • Pour in the melted chocolate and whisk until mixture is well combined.
    4 oz semi sweet bakers chocolate
  • Sift in the flour, cocoa powder, and salt. Using a rubber spatula mix the dry ingredients into the wet ingredients until combined. Do not over mix.
    3/4 C all purpose flour, 1/4 C unsweetened cocoa powder, 1/4 tsp salt
  • Fold in the chocolate chips.
    1 C semi sweet chocolate chips
  • Pour batter into the lined pan and spread evenly.
  • Bake for 28 minutes or until edges are stiff and middle is set. Allow brownies to fully cool to room temperature in the pan before icing.

Chocolate Ganache

  • In a bowl add the chocolate chips, set aside.
    1 C semi sweet chocolate chips
  • In another microwave safe bowl add the heavy cream and heat till just before boiling, (about 45 seconds).
    6 tbsp heavy cream
  • Pour the heated cream over the chocolate chips and let sit for a minute. Mix chocolate and cream together.
    If there are still chunks of chocolate in the microwave for a few seconds and stir again. The ganache should be completely smooth.
  • Pour the ganache over top of the brownies and spread evenly.
  • Sprinkle on the mini candy covered chocolate chips.
    1/8 C mini candy covered chocolate chips
  • Place the brownies in the fridge for about 2 hours to set the ganache. Once set, slice and serve.


*spooned and levelled flour refers to the way of measuring flour. To properly measure flour you should scoop spoonfuls of flour into your measuring cup and then level off the access by scraping with a knife. Scooping the measuring cup directly into your flour causes the flour to compress and you will get more flour than the recipe calls for.
Keyword brownies, chewy brownies, chocolate, chocolate ganache, copycat cosmic brownies, copycat cosmic brownies recipe, cosmic brownies, ganache, homemade cosmic brownies