Cosmic Brownies
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These homemade Cosmic Brownies are the retro copycat brownies we absolutely love, complete with a silky chocolate frosting and colorful rainbow candy coated chocolate chips on top.
These are a beloved treasured cosmic brownie recipe favorite, that is such a fun, classic chocolate treat we love to bring on picnics, pass out to classmates, birthdays or enjoy with a big scoop of ice cream! You may love these cosmic-inspired Hocus Pocus Brownie Bites and these Easy Cosmic Chocolate Cookies too!
Cosmic Brownies will never go out of style, because we love this delish copycat cosmic brownie recipe that brings us back to Little Debbie Cosmic Brownies
! Seriously easy to make brownies, so there’s no worry that you can’t make these in a jif for any occasion, when you’re craving brownies with a fun twist!
No mixer needed and are basically a one bowl brownies and one bowl frosting that are super simple to make. Kids can help! These brownies are right down their alley because they are so fun and colorful!
Ingredients You Need
For the Brownies
- unsalted butter, melted
- eggs
- granulated sugar
- brown sugar
- milk of choice
- vanilla extract
- unsweetened cocoa powder
- all-purpose flour
For the Topping
- semi-sweet chocolate chips or can use chocolate bar, chopped
- heavy cream
- rainbow candy coated chocolate chips or mini M&M Minis
or can use chocolate bar, chopped
or mini M&M MinisHow to Make Homemade Cosmic Brownies
For the Brownies
- Preheat oven to 350 degrees F. Line a 9×9 inch pan with foil or parchment paper. Spray with non stick cooking spray.
- In a large bowl, melt butter in the microwave for 1-2 minutes.
- Using whisk, whisk in brown sugar, granulated sugar, eggs, milk, and vanilla into the melted butter.
- Whisk cocoa powder and flour in a separate bowl, then add to wet mixture until smooth.
- Spread batter in prepared pan. Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean. Cool completely.
For the Ganache
- Heat the cream in a small saucepan over medium heat until it begins to gently simmer. Do not let it come to a rapid boil– that’s too hot! Can also microwave cream with same results.
- Add chocolate chips. Stir occasionally until smooth.
- Pour ganache over brownies. Smooth with an offset spatula.
- Sprinkle with candy coated chocolate chips or mini M&Ms.
- Refrigerate brownies until the ganache has set.
Storing Brownies
Storing Brownies - Refrigerator: Store in the fridge in an air-tight container for up to 5 days.
- Freezer: You can freeze these copycat cosmic brownies in a freezer baggie for up to 3 months. Simply thaw at room temperature for 2-3 hours in the fridge until you’re ready to indulge!
Tips for Copycat Cosmic Brownies
- When measuring flour, make sure you’re not scooping up packed flour, when you are measuring. You should fluff it up with a spoon or fork before you measure it. Second, spoon the flour into the measuring cup. Gently pile it in until it forms a heap above the rim of the measuring cup. Scrape off the excess with a straight edge by using the handle of a spoon or knife.
- Do not overmix brownies! Mix until the dry ingredients are just combined, for the moist delicious brownie texture.
- Bake Copycat Cosmic Brownies in a pan lined with foil or parchment paper for easy removal out of baking pan.
- Cut brownies after the frosting has set in the fridge to get nice clean brownie slices for serving. They cut much better while the brownies are cold. Simply lift the brownies out of the pan by pulling the foil or parchment paper overhang and place brownies on a cutting board to slice your brownies easily.
- To tell if brownies are done, insert a toothpick in the center. If the toothpick comes out with a few crumbs, your brownies are done. If you still see batter on the toothpick, bake for 2-3 more minutes at a time.
. Gently pile it in until it forms a heap above the rim of the measuring cup. 
or 
for easy removal out of baking pan.
Make this easy copycat cosmic brownie recipe today! You won’t believe how easy they are to make and they taste just like the Little Debbie Cosmic Brownies you grew up with, only this homemade version is better, ya know? 🙂
More Delish Treats & Desserts!
- Awesome Rainbow Cookies
- Starbuck’s CopyCat Lemon Loaf
- Rainbow Sprinkle Cake
- Starbuck’s Banana Bread
- “CopyCat” Starbucks Pumpkin Pound Cake
- Lunch Lady Brownies
- Delish Chocolate Chip Peanut Butter Oatmeal Bars
Cosmic Brownies
Ingredients
Cosmic Brownies
- ¾ cup unsalted butter 1 ½ sticks, melted
- 2 large eggs
- 1 cup granulated sugar
- ⅔ cup brown sugar packed
- 2 tablespoons milk of choice
- 2 teaspoons vanilla extract
- ¾ cup unsweetened cocoa powder
- ¾ cup all-purpose flour
Chocolate Ganache Frosting
- 1 ½ cups semi-sweet chocolate chips
- ½ cup heavy cream
- 1 cup rainbow candy coated chocolate chips or mini M&M Minis
Instructions
Cosmic Brownies
- Preheat oven to 350 degrees F. Line a 9x9 inch pan with foil or parchment paper. Spray with non stick cooking spray.
- Melt butter in the microwave for 1-2 minutes in a large bowl.
- Using whisk, whisk in brown sugar, granulated sugar, eggs, milk, and vanilla.
- Whisk cocoa powder and flour in a separate bowl, then add to wet mixture until smooth.
- Spread batter in prepared pan. Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean. Cool completely.
Chocolate Ganache Frosting
- Heat the cream in a small saucepan over medium heat until it begins to gently simmer. Do not let it come to a rapid boil– that’s too hot! Can also microwave cream with same results.
- Add chocolate chips. Stir occasionally until smooth.
- Pour ganache over brownies. Smooth with an offset spatula.
- Sprinkle with candy coated chocolate chips or mini M&Ms.
- Refrigerate brownies until the ganache has set.
