Easy Homemade Cosmic Brownies
These Cosmic Brownies are rich, fudgy, and topped with a smooth chocolate frosting and colorful candy-coated chocolate chips. The brownies have a deep chocolate flavor and a soft, dense texture that makes them perfect for chocolate lovers. After chilling, they slice beautifully and taste just like the classic nostalgic treat but even better when made fresh at home.
Ingredients
For the Brownies
- 10 tbsp Unsalted Butter
- 1 cup granulated sugar
- ⅓ cup light brown sugar (packed)
- ¾ cup + 2 tablespoons unsweetened cocoa powder
- ½ tsp vanilla extract
- 2 Large eggs
- 1 yolk eggs
- 1 tbsp corn syrup
- ⅔ cup all-purpose flour
- 1 tbsp cornstarch
- ¼ tsp fine sea salt
For the Chocolate Frosting
- ½ cup heavy cream
- 1 ½ cup semisweet chocolate chips
Topping
- Rainbow candy-coated chocolate chips or mini M&M’s
- Sprinkles or other candy toppings (optional)
Instructions
- Preheat your oven to 350°F (175°C). Line an 8×8 inch baking pan with parchment paper or foil and lightly spray with cooking spray.
- In a large microwave-safe bowl, melt the butter for about 90 seconds.
- Add the granulated sugar, brown sugar, and cocoa powder and stir until well combined. If the mixture is very hot, allow it to cool slightly.
- Mix in the vanilla extract, eggs, egg yolk, and corn syrup, stirring until the batter becomes smooth and glossy.
- Add the flour, cornstarch, and salt, then gently mix until just combined. The batter will be thick.
- Spread the batter evenly into the prepared pan.
- Bake for about 25 minutes, or until the center is set. Allow the brownies to cool completely in the pan before adding the frosting.
Make the Chocolate Frosting
- Place the heavy cream in a microwave-safe bowl and heat for about 1 minute.
- Add the chocolate chips and let them sit for 3 minutes, then stir until smooth and glossy.
- Pour the frosting over the cooled brownies and spread it evenly.
Add the Topping
- Sprinkle rainbow candy-coated chocolate chips or your preferred candy toppings over the frosting.
Chill and Slice
- Refrigerate the brownies for 1–2 hours until the frosting is fully set. Once firm, cut into squares and serve.
Notes
- Make sure the butter mixture is not too hot before adding the eggs. If the mixture is very hot, it can cook the eggs and affect the texture of the brownies.
- For the best texture, measure flour correctly. Too much flour can make brownies dense instead of fudgy.
- Let the brownies cool completely before adding the frosting. If they are warm, the frosting may melt and become too thin.
- When making the frosting, allow the hot cream to sit with the chocolate chips for a few minutes before stirring. This helps create a smooth and glossy ganache.
- For clean slices, chill the brownies first and use a sharp knife to cut them into even squares.