cosmic brownies
cosmic brownies is a medium American recipe that serves 12. 250 calories per serving. Recipe by Tim Laielli on YouTube.
Prep: 30 min | Cook: 25 min | Total: 3 hrs 10 min
Cost: $14.46 total, $1.20 per serving
Ingredients
- 1 cup Unsalted Butter (for brownie batter, melted)
- 2 cups Semi-Sweet Chocolate Chips (1 cup for batter, 1 cup for ganache)
- 1.5 cups Granulated Sugar (adds sweetness and helps texture)
- 0.5 cup Brown Sugar (packed, adds moisture)
- 3 Large Eggs (room temperature)
- 1 tsp Vanilla Extract (pure vanilla)
- 0.75 cup All-Purpose Flour (sifted)
- 0.5 cup Unsweetened Cocoa Powder (high‑quality Dutch‑process)
- 0.25 tsp Baking Powder
- 0.25 tsp Salt
- 0.75 cup Heavy Cream (for ganache, full‑fat)
- 2 tbsp Unsalted Butter (for ganache) (cut into small pieces)
- 0.25 cup Rainbow Sprinkles (for topping, the exact sprinkles used in the original Cosmic Brownies)
Instructions
Preheat Oven & Prepare Pan
Preheat the oven to 350°F (175°C). Line a 9×13‑inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
Time: PT5M
Temperature: 350°F
Melt Butter and Chocolate
Place 1 cup butter and 1 cup chocolate chips in a heatproof bowl over a saucepan of simmering water (double boiler). Stir constantly until completely smooth and glossy.
Time: PT5M
Combine Sugars, Eggs, and Vanilla
In a large mixing bowl, whisk together granulated sugar, brown sugar, eggs, and vanilla extract until the mixture lightens slightly and is well‑combined.
Time: PT5M
Incorporate Melted Chocolate
Pour the melted butter‑chocolate mixture into the sugar‑egg bowl. Stir gently until fully incorporated; the batter will be thick.
Time: PT3M
Fold in Dry Ingredients
Sift together flour, cocoa powder, baking powder, and salt. Gently fold the dry mixture into the batter using a spatula until just combined—do not over‑mix.
Time: PT5M
Bake the Brownies
Spread the batter evenly in the prepared pan. Bake for 25 minutes, or until the top looks set and a toothpick inserted in the center comes out with a few moist crumbs.
Time: PT25M
Temperature: 350°F
Cool Slightly
Remove the pan from the oven and let the brownies cool on a rack for about 15 minutes. This makes them sturdy enough to handle the ganache.
Time: PT15M
Prepare Chocolate Ganache
In a saucepan, bring the heavy cream to a gentle simmer (just before it starts to boil). Remove from heat and pour over 1 cup chocolate chips in a heatproof bowl. Let sit 2 minutes, then stir until smooth. Add the 2 tbsp butter and continue stirring until the ganache is glossy and fully incorporated.
Time: PT10M
Frost and Sprinkle
Spread the warm ganache evenly over the cooled brownies using a spatula. Immediately sprinkle the rainbow sprinkles over the top, covering the surface.
Time: PT5M
Chill to Set
Place the frosted brownies in the refrigerator for at least 2 hours (or until the ganache is firm).
Time: PT2H
Cut and Serve
Lift the brownies out of the pan using the parchment overhang. Transfer to a cutting board and cut into 12 even squares.
Time: PT5M
Nutrition Facts
- Calories
- 250
- Protein
- 3 g
- Carbohydrates
- 30 g
- Fat
- 12 g
- Fiber
- 2 g
Dietary info: Vegetarian
Allergens: Dairy, Eggs, Gluten
Last updated: April 18, 2026






