These Cosmic Brownies are a delightful treat that will bring joy to any occasion. Their rich chocolate flavor, topped with a glossy ganache and colorful rainbow chips, makes them an irresistible dessert. Perfect for parties, family gatherings, or just a cozy night in, these brownies are easy to make and sure to impress everyone. Enjoy the chewy texture and vibrant appearance that make these cosmic brownies truly special!
Why You’ll Love This Recipe
- Easy to Make: This recipe requires simple ingredients and straightforward steps, making it accessible for bakers of all skill levels.
- Rich Flavor: The combination of Dutch cocoa powder and high-quality chocolate ensures a deep, satisfying chocolate taste in every bite.
- Colorful Presentation: Topped with rainbow chips, these brownies not only taste amazing but also look fantastic on any dessert table.
- Versatile Treat: Perfect for birthdays, holidays, or just because—these brownies are loved by both kids and adults alike.
- Make Ahead Option: You can prepare the brownies in advance and store them for later enjoyment, making them ideal for busy schedules.
Tools and Preparation
Before diving into the recipe, gather your tools to ensure a smooth baking experience.
Essential Tools and Equipment
- 9×13 inch baking pan
- Mixing bowls
- Whisk
- Spatula
- Saucepan
- Measuring cups and spoons
Importance of Each Tool
- Baking Pan: A 9×13 inch pan is perfect for creating evenly baked brownies that cut into nice squares.
- Mixing Bowls: Using separate bowls ensures that you can mix wet ingredients without splashing into the dry ones.
- Whisk: A whisk helps to combine ingredients smoothly, especially when incorporating eggs into the mixture.

Ingredients
These homemade cosmic brownies are absolutely delicious. A quick brownie recipe is topped with a luscious chocolate ganache and tons of rainbow chips! Step-by-step photos help you make this easy dessert recipe.
Ingredients:
– 2oz (1/4 Cup) Water
– 1oz (2 Tbsp) Unsalted Butter
– 250 Grams (1 1/4 cups) Granulated Sugar
– 90 Grams (3/4 cups) Dutch Cocoa Powder
– 2oz (scant 1/4 cup) Vegetable Oil
– 1oz (2 Tablespoons) Light Corn Syrup
– 1 Tablespoon Pure Vanilla Extract
– 1 Large Egg Yolk and 1 Large Egg, at room temp.
– 1/8 Teaspoon Baking Soda
– 1/2 Teaspoon Salt
– 1 Tablespoon Cornstarch/ Cornflour
– 60 Grams (scant 1/2 cup) All-Purpose Flour
– 2oz Chocolate (chips, chunks, or bars chopped)
– 12oz (2 Cups) Chocolate, good quality I use Call
– 6oz (3/4 Cup) Heavy Whipping Cream
– 1 Tablespoon Butter
– Rainbow Candy Coated Rainbow Chips
How to Make Cosmic Brownies
Step 1: Preheat the Oven
Preheat your oven to 350F/180C. Line a 9×13 inch baking pan with foil and grease it heavily.
Step 2: Combine Ingredients on the Stove
In a large pot, add the following ingredients:
* Water
* Unsalted Butter
* Granulated Sugar
* Light Corn Syrup
* Dutch Cocoa Powder
Cook over medium heat for about 2–3 minutes until everything is well combined. Once mixed, remove from heat and let it cool for about 5 minutes.
Step 3: Mix Wet Ingredients
Add the following to the cooled mixture:
* Vegetable Oil
* Pure Vanilla Extract
* Egg Yolk and Large Egg
Whisk thoroughly until all ingredients are fully incorporated.
Step 4: Add Dry Ingredients
Next, mix in:
* Baking Soda
* Salt
* Cornstarch
Gently fold in the flour and chocolate chips using a spatula until just combined. Be careful not to overmix as this can affect the texture.
Step 5: Bake the Brownies
Pour the brownie mixture into your prepared pan. Bake for 14–18 minutes. To check if they’re done, insert a toothpick into the center; it should come out with moist crumbs rather than being completely dry. After baking, place the pan on a wire rack to cool completely before serving.
Enjoy your homemade cosmic brownies! They are sure to be a hit wherever you share them.
How to Serve Cosmic Brownies
Cosmic brownies are a delightful treat that can be enjoyed in various ways. Whether you’re hosting a party or just indulging at home, these brownies can be served to please everyone.
For a Fun Party Platter
- Slice and Share: Cut the brownies into small squares for easy sharing among guests.
- Decorate with Fruit: Pair each brownie with fresh berries for a refreshing contrast.
With Ice Cream
- Brownie Sundae: Top warm cosmic brownies with scoops of your favorite ice cream and drizzle with chocolate sauce.
- A La Mode: Serve with a scoop of vanilla ice cream on the side for a classic combination.
As a Gift
- Gift Box Presentation: Package the brownies in a decorative box tied with a ribbon for an appealing gift.
- Personalized Notes: Include a handwritten note for a personal touch when gifting.
How to Perfect Cosmic Brownies
To achieve the ultimate cosmic brownies, follow these helpful tips. They will ensure your brownies come out rich, fudgy, and absolutely irresistible.
- Use Quality Chocolate: Choose high-quality chocolate for the ganache and chips to enhance flavor.
- Don’t Overmix: Mix just until combined to maintain the fudgy texture; overmixing can lead to cakey brownies.
- Check Oven Temperature: Ensure your oven is properly calibrated for consistent baking results.
- Cool Completely: Let the brownies cool fully before cutting to avoid crumbling.
- Experiment with Toppings: Feel free to get creative with toppings like nuts or different flavored chips.
Best Side Dishes for Cosmic Brownies
Pairing cosmic brownies with complementary side dishes can elevate your dessert experience. Here are some excellent options:
- Vanilla Ice Cream: A classic pairing that adds creaminess to every bite of brownie.
- Fresh Berries: Strawberries or raspberries add tanginess and freshness alongside rich desserts.
- Whipped Cream: Light and airy whipped cream provides a nice contrast to dense brownies.
- Chocolate Sauce: Drizzle warm chocolate sauce on top for an extra layer of indulgence.
- Coffee or Espresso: A cup of coffee enhances the chocolate flavor and makes for an ideal after-dinner treat.
- Milkshakes: Chocolate or vanilla milkshakes create a fun, nostalgic vibe that pairs beautifully with brownies.
Common Mistakes to Avoid
Making cosmic brownies can be a delightful experience, but there are common pitfalls to watch out for.
- Overmixing the Batter: This can lead to tough brownies. Mix just until combined for a fudgier texture.
- Incorrect Oven Temperature: Always preheat your oven. An inaccurate temperature can cause uneven baking.
- Using Low-Quality Chocolate: The better the chocolate, the richer the flavor. Invest in good quality chocolate for that decadent taste.
- Not Allowing Brownies to Cool Fully: Cutting warm brownies may result in messy squares. Let them cool completely for cleaner cuts.
- Ignoring Baking Time: Check your brownies a few minutes before the timer goes off. Overbaking can make them dry and crumbly.
Storage & Reheating Instructions
Refrigerator Storage
- Store cosmic brownies in an airtight container.
- They will last up to 5 days in the refrigerator.
Freezing Cosmic Brownies
- Wrap each brownie individually in plastic wrap before placing them in a freezer-safe bag.
- Cosmic brownies can be frozen for up to 3 months.
Reheating Cosmic Brownies
- Oven: Preheat to 350°F (175°C), place brownies on a baking sheet, and heat for about 10 minutes until warm.
- Microwave: Heat individual brownies on a microwave-safe plate for about 15-20 seconds.
- Stovetop: Place a brownie in a skillet over low heat, cover, and warm for about 5 minutes.
Frequently Asked Questions
What are Cosmic Brownies?
Cosmic brownies are rich, fudgy chocolate brownies topped with chocolate ganache and colorful rainbow chips. They are inspired by the classic snack cake but made from scratch!
How to make cosmic brownies from scratch?
To make cosmic brownies from scratch, combine ingredients like cocoa powder, sugar, and eggs, then bake until moist and fudgy. Follow our full recipe for best results!
Can I customize my Cosmic Brownies?
Absolutely! You can add nuts, swap out rainbow chips for other candies, or even mix in different types of chocolate for unique flavors.
How do I store leftover Cosmic Brownies?
Store leftover cosmic brownies in an airtight container at room temperature or refrigerate them to keep them fresh longer.
Are Cosmic Brownies suitable for parties?
Yes! These homemade cosmic brownies are perfect for parties due to their delicious taste and vibrant appearance that appeals to both kids and adults.
Final Thoughts
These cosmic brownies are not only simple to make but also incredibly versatile. You can customize them with various toppings or mix-ins according to your preferences. We encourage you to try this recipe and enjoy the delightful experience of making these delicious treats at home!
Cosmic Brownies
Indulge in the delightful world of homemade Cosmic Brownies! These fudgy chocolate treats are topped with a rich chocolate ganache and a burst of colorful rainbow chips, making them an eye-catching dessert for any occasion. Whether you’re hosting a party, celebrating a special event, or simply treating yourself to something sweet, these brownies are sure to impress everyone with their decadent flavor and chewy texture. Easy to make and even easier to enjoy, this recipe is perfect for bakers of all levels.
- Prep Time: 15 minutes
- Cook Time: 18 minutes
- Total Time: 33 minutes
- Yield: Makes about 16 brownies 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
- 2oz Water
- 1oz Unsalted Butter
- 250g Granulated Sugar
- 90g Dutch Cocoa Powder
- 2oz Vegetable Oil
- 1oz Light Corn Syrup
- 1 Tablespoon Pure Vanilla Extract
- 1 Large Egg Yolk and 1 Large Egg
- 1/8 Teaspoon Baking Soda
- 1/2 Teaspoon Salt
- 1 Tablespoon Cornstarch
- 60g All-Purpose Flour
- 2oz Chocolate (chips, chunks, or bars chopped)
- 12oz Good Quality Chocolate (for ganache)
- 6oz Heavy Whipping Cream
- 1 Tablespoon Butter
- Rainbow Candy Coated Rainbow Chips
Instructions
- Preheat your oven to 350°F (180°C) and line a greased 9×13 inch baking pan with foil.
- In a large pot, combine water, butter, sugar, corn syrup, and cocoa powder. Cook over medium heat for about 2–3 minutes until well mixed. Remove from heat and cool for about 5 minutes.
- Stir in vegetable oil, vanilla extract, egg yolk, and large egg until well combined.
- Gently fold in baking soda, salt, cornstarch, flour, and chocolate chips using a spatula until just mixed.
- Pour the mixture into the prepared pan and bake for 14–18 minutes or until a toothpick comes out with moist crumbs. Cool completely before cutting.
Nutrition
- Serving Size: 1 brownie (50g)
- Calories: 210
- Sugar: 25g
- Sodium: 60mg
- Fat: 10g
- Saturated Fat: 5g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 30mg