Print

Fudgy Cosmic Brownie Cookies (TikTok Viral!) Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

4.1 from 6 reviews

Fudgy Cosmic Brownie Cookies are a TikTok viral sensation combining the rich, intense flavor of brownie with the fun and festive look of cookie dough topped with rainbow chip sprinkles. These cookies boast a fudgy texture, enhanced with a smooth chocolate ganache topping, making them irresistibly decadent and perfect for any occasion.

Ingredients

Cookie Dough

  • ½ cup unsalted butter, softened
  • ½ cup light brown sugar
  • ¼ cup granulated sugar
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 2 tablespoons light corn syrup
  • ¼ teaspoon baking soda
  • ¼ teaspoon salt
  • ½ cup dark cocoa powder (Hershey’s Special Dark recommended)
  • 1 ¼ cups all-purpose flour

Chocolate Ganache

  • ¾ cup semi-sweet chocolate chips
  • ¼ cup heavy cream

Decoration

  • Rainbow chip sprinkles

Instructions

  1. Preheat Oven: Preheat your oven to 350°F to ensure it reaches the right temperature for baking the cookies evenly.
  2. Cream Butter and Sugars: Using an electric mixer on medium-high speed, cream together softened butter, light brown sugar, and granulated sugar for 2 minutes until the mixture is light and fluffy, this adds air for a tender crumb.
  3. Mix Wet Ingredients: Add the egg, vanilla extract, and light corn syrup to the creamed mixture. Mix on low speed until just combined, then scrape down the sides of the bowl to incorporate all ingredients thoroughly.
  4. Add Leavening and Salt: Incorporate baking soda and salt, mixing briefly for 5-10 seconds to distribute evenly throughout the batter.
  5. Add Cocoa and Flour: Finally, add dark cocoa powder and all-purpose flour. Mix on medium speed until all dry ingredients are just combined, avoiding overmixing to keep a tender structure.
  6. Shape Cookies: Scoop the dough into ¼ cup portions, roll into balls, then gently flatten each into a ½ inch thick disc. This helps the cookies spread appropriately during baking.
  7. Bake the Cookies: Place cookies on a prepared baking sheet and bake at 350°F for 11-12 minutes. Centers may look slightly wet; do not overbake as residual heat will firm them up.
  8. Cool Cookies: Allow cookies to cool fully on the baking sheet before decorating to prevent the ganache from melting.
  9. Prepare Chocolate Ganache: Place semi-sweet chocolate chips in a medium heat-safe bowl.
  10. Heat Cream: Heat heavy cream in the microwave for 30-45 seconds until bubbling or warm it on the stove until steaming, making sure the container is tall to avoid overflow.
  11. Combine Ganache Ingredients: Pour hot cream over chocolate chips, press chips down to submerge, and let sit for 3 minutes. Stir vigorously until smooth and creamy. If not fully melted, microwave at 50% power in 10-second increments, stirring between, until silky.
  12. Decorate Cookies: Spoon about 1 tablespoon of ganache on each cooled cookie and sprinkle with rainbow chip sprinkles.
  13. Chill to Set: Refrigerate decorated cookies for 30-60 minutes to allow ganache to harden beautifully.
  14. Storage Recommendation: For best texture and flavor, refrigerate cookies longer to enhance fudginess. They can also be stored at room temperature for up to 2 days.

Notes

  • Use a ¼ cup scoop for even-sized cookies that bake uniformly.
  • Do not overbake the cookies; centers should appear slightly wet when removed from the oven.
  • Refrigeration enhances the fudgy texture of these cookies.
  • If ganache becomes too thick or grainy, reheating gently while stirring will restore smoothness.
  • These cookies are best enjoyed chilled but can be stored at room temperature for up to 2 days.