Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon

Cosmic Brownie Cookies

5 Stars 4 Stars 3 Stars 2 Stars 1 Star No reviews
  • Author: Sue
  • Prep Time: 10 minutes
  • Cook Time: 10 minutes
  • Total Time: 50 minutes (including chilling and ganache set-up)
  • Yield: 20 cookies
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

Rich and fudgy chocolate cookies inspired by nostalgic cosmic brownies, topped with silky ganache and colorful sprinkles for a decadent treat.


Ingredients

  • 1 cup salted butter, melted
  • 1 ¼ cups granulated sugar
  • ¾ cup light brown sugar
  • 2 tsp vanilla extract
  • 2 eggs, room temperature
  • 1 ⅔ cups all‑purpose flour
  • 2 tsp corn starch
  • 1 cup cocoa powder (preferably dark chocolate cocoa powder)
  • 1 tsp baking soda
  • ½ tsp kosher salt
  • 8 oz semi‑sweet chocolate (bars or chips)
  • ¾ cup heavy cream
  • ½ tsp vanilla extract (for ganache)
  • 1 cup cosmic brownie sprinkles

Instructions

  1. In a stand mixer, whisk together melted butter, sugars, and vanilla for 1 minute.
  2. Add eggs and mix until just incorporated.
  3. Add flour, corn starch, cocoa powder, baking soda, and salt. Mix on low until combined.
  4. Scoop 2–2.5 Tbsp dough balls onto parchment-lined baking sheets. Chill for 30 minutes.
  5. Preheat oven to 350 °F. Arrange dough 2″ apart and bake for 9–10 minutes. Cool on sheet for 3 minutes, then transfer to wire rack.
  6. Heat cream until simmering, pour over chopped chocolate, let sit for 5 minutes. Add vanilla and whisk until smooth. Let cool 15–30 minutes until spreadable.
  7. Spread 2–3 Tbsp ganache on each cooled cookie, leaving a small border. Top with sprinkles.
  8. Serve immediately or chill to set ganache.

Notes

  • Chilling the dough helps prevent spreading and keeps cookies fudgy.
  • Ganache should be cooled before spreading to avoid runniness.
  • Use dark cocoa for intense flavor or regular for a milder taste.
  • Store in airtight container up to 3 days at room temperature or 5 days in the fridge.
  • Microwave for 5 seconds to rewarm cookies.

Nutrition

  • Serving Size: 1 cookie
  • Calories: 210
  • Sugar: 18g
  • Sodium: 95mg
  • Fat: 12g
  • Saturated Fat: 7g
  • Unsaturated Fat: 4g
  • Trans Fat: 0g
  • Carbohydrates: 25g
  • Fiber: 2g
  • Protein: 2g
  • Cholesterol: 35mg