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The Best Cosmic Brownies Recipe

4.8 from 121 reviews

Indulge in these decadent Cosmic Brownies featuring a rich, fudgy base topped with a smooth chocolate ganache and colorful rainbow candy-coated chocolate chips for a fun, festive touch. Perfectly baked to achieve a slightly gooey center with set edges, these brownies offer a delightful mix of textures and vibrant flavors that are sure to satisfy any chocolate lover’s cravings.

Ingredients

Scale

Brownie Ingredients

  • ½ cup unsalted butter
  • ¾ cup granulated sugar
  • ¼ cup brown sugar
  • ½ cup Dutch-process cocoa powder
  • ¼ tsp salt
  • 1 tsp vanilla extract
  • 2 large eggs (room temperature)
  • ½ cup all-purpose flour
  • 1 tbsp cornstarch

Ganache Ingredients

  • ¼ cup heavy cream
  • 4 oz semisweet chocolate (chopped)
  • Pinch of salt

Topping

  • 23 tbsp rainbow candy-coated chocolate chips (Wilton rainbow chips or similar)

Instructions

  1. Preheat and Prepare Pan: Preheat your oven to 350°F and line an 8×8 inch baking pan with parchment paper for easy removal.
  2. Make Brownie Base: In a medium saucepan over the stove, melt the unsalted butter. Stir in granulated sugar, brown sugar, Dutch-process cocoa powder, and salt until the mixture is smooth and well combined.
  3. Add Eggs and Vanilla: Transfer the mixture to a large bowl. Whisk in vanilla extract, then add eggs one at a time, beating thoroughly after each addition until the batter is thick and shiny.
  4. Incorporate Dry Ingredients: Gently fold in the all-purpose flour and cornstarch until just combined to avoid overmixing.
  5. Bake the Brownies: Pour the batter evenly into the prepared pan. Bake for 20–22 minutes, or until the edges are set but the center still has a slight jiggle. Remove from oven and let cool completely in the pan.
  6. Prepare for Ganache: Once cooled, flip the brownies out of the pan and peel off the parchment paper to create a flat surface for the ganache.
  7. Make Ganache: Heat the heavy cream in the microwave for about 30 seconds until hot but not boiling. Pour over the chopped semisweet chocolate and add a pinch of salt. Let sit for 1 minute, then stir gently until smooth and glossy.
  8. Apply Ganache: Spread the ganache evenly over the flat side of the cooled brownies.
  9. Add Toppings: While the ganache is still soft, sprinkle the rainbow candy-coated chocolate chips evenly over the surface for a colorful, festive look.
  10. Chill and Serve: Refrigerate the brownies for 1–2 hours to set the ganache before slicing. For clean edges, wipe the knife between cuts.

Notes

  • Use Dutch-process cocoa powder for a richer chocolate flavor and smoother texture.
  • Ensure eggs are at room temperature for better batter emulsification.
  • Do not overbake brownies; a slight jiggle in the middle ensures a fudgy texture.
  • Chilling the ganache before slicing helps achieve clean cuts.
  • Feel free to substitute rainbow candy chips with any colorful candy or chocolate chips you prefer.

Keywords: Cosmic brownies recipe, fudgy brownies, chocolate ganache brownies, rainbow brownies, festive dessert, easy brownies, homemade brownies