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Cosmic Brownie Cookies

Prep Time 45 minutes
Cook Time 11 minutes
Chill Time 30 minutes
Yield: 21 cookies
Cosmic brownie cookies are the ultimate throwback to a favorite childhood treat, Little Debbie's cosmic brownies. Chewy and fudgy brownie cookies are iced with smooth chocolate ganache icing and decorate with rainbow candy. Chocolate lovers will fall in love with this delicious cookie recipe.

Ingredients 

Chocolate Brownie Cookies

  • 1 cup (227 g) unsalted butter melted
  • 1 ½ cups (300 g) granulated sugar
  • ½ cup (110 g) light brown sugar
  • 2 (2) large eggs room temperature
  • 2 tsp (2 tsp) vanilla extract
  • 2 cups (250 g) all-purpose flour
  • cup (60 g) dark cocoa powder
  • 1 tbsp (8 g) cornstarch
  • 1 tsp (1 tsp) baking soda
  • ½ tsp (0.5 tsp) baking powder
  • ½ tsp (0.5 tsp) salt

Chocolate Ganache Frosting

  • 1 ⅓ cup (180 g) semisweet chocolate chips
  • cup (80 ml) heavy cream

Additional Ingredients

  • cup (160 g) rainbow chip candies

Instructions

Chocolate Brownie Cookies

  • In a mixing bowl, whisk together the all-purpose flour, dark cocoa powder, cornstarch, baking soda, baking powder, and salt. Set aside.
  • In the bowl of a stand mixer fitted with a paddle attachment or in a large mixing bowl with an electric hand mixer, mix together the melted unsalted butter, granulated sugar, and light brown sugar until well combined. Add in the eggs and vanilla extract and mix until smooth.
  • Add in the flour mixture and mix on low speed until the cookie dough forms. Scrape the sides and bottom of the bowl to ensure the ingredients are well combined.
  • Use a large cookie scoop (3 tablespoons) to portion out the cookie dough. Roll the cookie dough into smooth balls and place on a parchment-lined baking tray. Chill the cookie dough balls for 30 minutes.
  • Preheat the oven to 350℉ (177℃). Line baking sheet pans with silicone baking mats or parchment paper.
  • Place the chilled cookie dough balls on the prepared baking sheet pans, allowing room for spreading. Bake the cookies for about 11 minutes until the edges are set and the centers are puffed up. Cool the cookies on the pan for 2 minutes and then transfer the cookies to a wire rack to cool completely.

Chocolate Ganache Frosting

  • Pour the semisweet chocolate chips and heavy cream into a heat-safe bowl. Heat the chocolate and cream mixture in the microwave for 1 minutes. Allow the mixture to sit for 1 minute. Stir until the chocolate is melted and the ganache is smooth and shiny.

Assembling the Cookies

  • Spoon the chocolate ganache over the cooled chocolate cookies and spread with an offset spatula. Sprinkle the cookies with rainbow chip candies.

Notes

  • Store the cookies in an airtight container at room temperature for 1 to 2 days.
Metric conversions are calculated automatically. I cannot guarantee the accuracy of this information.

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