Better Than CRUMBL Cosmic Brownie Cookies Copycat Recipe

Cosmic brownie cookies are everything you loved about the Little Debbie cosmic brownie of your childhood, turned into a giant, fudgy Crumbl style cookie. This copycat recipe starts with a real brownie batter (not a regular cookie dough), bakes up with that shiny crackly top, then gets crowned with silky chocolate ganache and those iconic rainbow candy chips. If you have been searching for a cosmic brownie cookie recipe that actually tastes like a brownie, this is the one. To all the chocolate lovers, this one is for you!

If you love Crumbl cookies, you need to try these Chilled CRUMBL Twix Cookies, The best CRUMBL Hazelnut Mudslide Cookies, Crumbl Chocolate Chip Cookies as well as this Chilled Crumbl Sugar Cookies Copycat Recipe.

Brownie cookies are pure magic! Make those CRUMBL inspired brownie cookies and you’ll make a whole lot of people as happy as can be!

After making the Chilled CRUMBL Twix Cookies and the Chilled Crumbl Sugar Cookies, I received so many requests to try and make the Cosmic brownie cookie too, of course, I had to!

This is the best Cosmic brownie cookie recipe ever!

When I made this recipe, I was inspired by my Small Batch Brownie Cookie Recipe because I have never had a better chocolate brownie cookie in my life! It is really that good, and that is exactly why I am calling it better than the Crumbl cosmic brownie cookie (the one Crumbl officially calls the Galaxy Brownie cookie on their rotating menu).

Here is my honest hot take after testing batch after batch: the actual Crumbl cosmic brownie cookie does not taste much like a brownie to me. It bakes up more like a thick chocolate cookie. So I did something about it. I rebuilt the whole thing around a real brownie batter, with whipped eggs and sugar for that glossy, crackly top and melted chocolate folded right in for a gooey, fudgy middle. No corn syrup, no cornstarch, no cakey crumb. Just a true galaxy brownie cookie that happens to be shaped like a cookie.

Why you need to make this recipe!

•  It is a childhood favorite made into a cookie.
• You get a much larger batch for a whole lot less money than a bakery box.
• Each cookie tastes just like a brownie and is topped with the best ganache ever.
• They are literally so pretty to look at.
• This Crumbl brownie cookie recipe is easy and quick to make.

What are cosmic brownie cookies?

If you grew up raiding the pantry for Little Debbie Cosmic Brownies, you already know the vibe: a dense chocolate brownie, a layer of fudgy chocolate frosting, and those little rainbow candy coated chips on top. Crumbl turned that nostalgic snack cake into a giant cookie (the one on their menu called the Galaxy Brownie cookie), and this copycat brings it home so you can bake a whole batch any day of the week, no bakery trip required.

The candy topping, by the way, is simply rainbow candy coated chocolate chips. You can usually find them near the ice cream toppings or the sprinkles at the grocery store, and mini M&Ms or rainbow sprinkles work in a pinch.

Ingredients for Crumbl cosmic brownie cookies

Here are the ingredients you will need to make these brownie cookies. Make sure to scroll down to the recipe card for the full detailed ingredient measurements.

• Flour– All-purpose flour is what you need for this recipe.
• Cocoa powder– The chocolate brownie cookies have 2 types of chocolate in them, of those being cocoa powder.
• Baking powder– The baking powder will give these cookies a little height.
• Salt– A little salt helps balance out the sweetness flavor.
• Butter– Use salted or unsalted butter for these cookies. It will give them richness.
• Semi-sweet chocolate chips– Make sure to use good quality semi-sweet chocolate chips for the best-flavored brownie cookie of your life! The chocolate chips are used for both the chocolate ganache and the brownie cookie.
• Egg– The eggs will hold the cookies together.
• Brown sugar & granulated sugar– both the brown and granulated sugar will sweeten the cookie and keep it moist.
• Vanilla– Vanilla brings out the chocolate flavor more.
• Heavy cream– The heavy cream will be used to make the chocolate ganache topping.
• Colored chocolate candies– Can’t have cosmic brownies without the OG-colored chocolate candies.

A quick note on the topping: those rainbow candy coated chocolate chips are the same ones on Little Debbie Cosmic Brownies. Look for them by the ice cream toppings or sprinkles, or swap in mini M&Ms or rainbow sprinkles if your store does not carry them. I like to get them online.

How to make CRUMBL cosmic brownie cookies

This is how you can make these cookies. Make sure to scroll down to the recipe card for the full detailed instructions!

1. Melt the butter and chocolate chips in a medium saucepan over medium-low heat. Then set aside.

2. Whisk the eggs and sugar until light in color and fluffy. They should double in volume.

3. While the mixer is still running, slowly add in the melted chocolate mixture and mix until fully combined.
4. Add in the flour, cocoa powder, salt, and baking powder, and gently fold with a spatula until the flour disappears.

5. Using a large cookie or ice cream scoop, scoop out 10 equally sized cookie dough balls and place them on a lined baking sheet then bake.
6. Using a large cookie cutter, something wider than your cookies, swoosh around your cookies to form the perfect round thick cookie.

Make the chocolate ganache

1. In a microwave-safe bowl, add the chocolate chips and the heavy cream and microwave in 30-second intervals. Stir in between and repeat the process until the mixture is fully melted and smooth.
2. scoop out 2-3 teaspoons of chocolate ganache on each cooled down brownie cookie, spread it on top, and sprinkle some rainbow chocolate candied over that and enjoy!

Cosmic brownie cookie variations

• Smaller, catering size cookies: Divide the dough into 18 to 24 portions instead of 10 and shave a couple of minutes off the bake time. Great for parties and lunchboxes.
• Cosmic brownie cookies with brownie mix: People always ask if you can shortcut this with a boxed brownie mix. You can stir a couple of tablespoons of flour into prepared brownie mix until it is thick enough to scoop, but it will spread more and lose that tall, bakery style structure. The from scratch brownie batter here is just as fast and so much better.
• Make it your own: Swap the rainbow candy chips for crushed Oreos, mini chocolate chips, or a flaky sprinkle of sea salt over the ganache.

How to store CRUMBL cosmic brownie cookies?

These cosmic brownie cookies keep beautifully. Here is how to store them:

• Room temperature: Up to 2 days in an airtight container if you want them soft and gooey for snacking.
• Fridge: Up to 6 days in an airtight container. Because the ganache is made with heavy cream, the fridge keeps everything fresh and lets the topping set so the cookies stack without smudging.
• Freezer, baked: Flash freeze the finished cookies on a tray until the ganache is firm, then stack them in a zip top bag and freeze for up to 3 months. Thaw at room temperature, or warm one for about 8 seconds in the microwave for that fresh baked gooeyness.
• Freezer, dough: You can also freeze the scooped dough balls and bake straight from frozen, adding a minute or two to the bake time.

Frequently Asked Questions