Cosmic Brownies are a nostalgic treat that many of us remember fondly from childhood. These irresistible fudgy brownies are rich and chocolatey, topped with colorful rainbow sprinkles that add a fun twist. Imagine sinking your teeth into a moist brownie, bursting with chocolate flavor and a delightful crunch from the sprinkles. Whether you’re planning a party or just craving something sweet, these brownies will surely satisfy your sweet tooth.

Why You’ll Love This Cosmic Brownies
There are several reasons to adore these Cosmic Brownies. First, they are incredibly easy to make, making them perfect for bakers of all levels. Second, the combination of rich chocolate flavor and chewy texture is simply irresistible. Third, they are versatile; you can customize them with nuts or additional toppings for extra flair. Fourth, they are great for parties, bringing a festive touch to any dessert table. Fifth, they can be made gluten-free or vegan, allowing everyone to enjoy them. Lastly, they store well, staying delicious for days. Enjoy these homemade treats as a go-to dessert option!
Ingredients for Cosmic Brownies
Gather these items:
- 1 cup Unsalted Butter (melted and slightly cooled)
- 1 cup Granulated Sugar (can use coconut sugar for deeper flavor)
- 1 cup Light Brown Sugar (can substitute with dark brown sugar)
- 3 Large Eggs (room temperature)
- 1 teaspoon Pure Vanilla Extract (can replace with almond extract)
- 1 cup Unsweetened Cocoa Powder (Dutch-process cocoa can be used)
- 1 cup All-Purpose Flour (can use gluten-free flour)
- 1 teaspoon Salt (fine sea salt preferred)
- 8 ounces Semisweet Chocolate (chopped)
- 0.5 cup Heavy Cream
- 2 tablespoons Light Corn Syrup (optional)
- 1 cup Rainbow Candy Coated Chocolate Chips (mini chocolate chips or sprinkles can be alternatives)
How to Make Cosmic Brownies Step-by-Step
- Step 1: Preheat your oven to 350°F (180°C) and line a 9×13-inch baking pan with foil or parchment paper.
- Step 2: Whisk together melted unsalted butter, granulated sugar, and light brown sugar until well combined.
- Step 3: Incorporate large eggs, an extra egg yolk, and pure vanilla extract into the sugar mixture.
- Step 4: Sift in unsweetened cocoa powder, all-purpose flour, and salt; mix until just combined.
- Step 5: Pour the brownie batter into the prepared pan, spreading it evenly; bake for 27-33 minutes.
- Step 6: Cool the brownies completely in the pan on a wire rack.
- Step 7: Prepare the ganache by heating heavy cream in a saucepan until it just simmers. Pour it over chopped semisweet chocolate and corn syrup, then mix until smooth.
- Step 8: Spread the smooth ganache over the cooled brownies and sprinkle with rainbow candy-coated chocolate chips.
- Step 9: Refrigerate your brownies for 1-2 hours to allow the ganache to set properly; then cut into squares and serve.
Pro Tips for the Best Cosmic Brownies
Keep these in mind:
- Store brownies in an airtight container for up to a week.
- For a richer flavor, use dark brown sugar.
- Experiment with different toppings, such as nuts or additional sprinkles.
- Ensure that the ingredients are at room temperature for better mixing.
Best Ways to Serve Cosmic Brownies
These Cosmic Brownies are perfect for various occasions. Serve them warm with a scoop of vanilla ice cream for an indulgent dessert. They also make great Cosmic Dessert Bars for birthday parties or family gatherings. Pair them with milk or coffee to elevate the experience!
How to Store and Reheat Cosmic Brownies
To store, place your Cosmic Brownies in an airtight container. They can be kept at room temperature for up to a week. For reheating, microwave individual squares for about 10-15 seconds to enjoy them warm. This step is great if you have made them ahead of time for meal prep!
Frequently Asked Questions About Cosmic Brownies
What’s the secret to perfect Cosmic Brownies?
The key to perfect Cosmic Brownies lies in using high-quality chocolate and not overbaking them. This ensures a fudgy texture that is rich in flavor!
Can I make Cosmic Brownies ahead of time?
Yes, you can make Cosmic Brownies ahead of time and store them in an airtight container. They stay fresh for several days, which is perfect for parties or events.
How do I avoid common mistakes with Cosmic Brownies?
To avoid mistakes, measure your ingredients accurately and follow the baking time closely. Overbaking can lead to dry brownies instead of the desired fudgy texture.
Variations of Cosmic Brownies You Can Try
Feel free to get creative with your Cosmic Brownies. You can add nuts like walnuts or pecans for a crunchy texture, or try using a mix of dark and milk chocolate for a richer flavor. For a vegan alternative, substitute eggs with flaxseed meal and use plant-based butter. You can also create Gluten-free Cosmic Brownies by using gluten-free flour instead of all-purpose flour.
For more delicious recipes, check out our Chocolate Eclair Cake or Grandma Carter’s Peanut Butter Cookies. If you’re looking for a savory option, try our Creamy Tuscan Scallops.
For additional tips on baking, you can refer to King Arthur Baking’s guide on baking tips.
Print
Irresistible Cosmic Brownies Recipe You Will Love
- Total Time: 165 minutes
- Yield: 16 servings 1x
- Diet: Vegetarian
Description
Irresistibly Fudgy Homemade Cosmic Brownies You’ll Adore
Ingredients
- 1 cup Unsalted Butter (melted and slightly cooled)
- 1 cup Granulated Sugar (can use coconut sugar for deeper flavor)
- 1 cup Light Brown Sugar (can substitute with dark brown sugar)
- 3 Large Eggs (room temperature)
- 1 teaspoon Pure Vanilla Extract (can replace with almond extract)
- 1 cup Unsweetened Cocoa Powder (Dutch-process cocoa can be used)
- 1 cup All-Purpose Flour (can use gluten-free flour)
- 1 teaspoon Salt (fine sea salt preferred)
- 8 ounces Semisweet Chocolate (chopped)
- 0.5 cup Heavy Cream
- 2 tablespoons Light Corn Syrup (optional)
- 1 cup Rainbow Candy Coated Chocolate Chips (mini chocolate chips or sprinkles can be alternatives)
Instructions
- Preheat your oven to 350°F (180°C) and line a 9×13-inch baking pan with foil or parchment paper.
- Whisk together melted unsalted butter, granulated sugar, and light brown sugar until well combined.
- Incorporate large eggs, an extra egg yolk, and pure vanilla extract into the sugar mixture.
- Sift in unsweetened cocoa powder, all-purpose flour, and salt; mix until just combined.
- Pour the brownie batter into the prepared pan, spreading it evenly; bake for 27-33 minutes.
- Cool the brownies completely in the pan on a wire rack.
- Prepare the ganache by heating heavy cream in a saucepan until it just simmers. Pour it over chopped semisweet chocolate and corn syrup, then mix until smooth.
- Spread the smooth ganache over the cooled brownies and sprinkle with rainbow candy-coated chocolate chips.
- Refrigerate your brownies for 1-2 hours to allow the ganache to set properly; then cut into squares and serve.
Notes
- Store brownies in an airtight container for up to a week.
- For a richer flavor, use dark brown sugar.
- Experiment with different toppings, such as nuts or additional sprinkles.
- Prep Time: 30 minutes
- Cook Time: 27-33 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 brownie
- Calories: 250
- Sugar: 20 g
- Sodium: 150 mg
- Fat: 14 g
- Saturated Fat: 8 g
- Unsaturated Fat: 4 g
- Trans Fat: 0 g
- Carbohydrates: 30 g
- Fiber: 2 g
- Protein: 3 g
- Cholesterol: 70 mg