Craving the rich, fudgy flavor of Crumbl’s iconic Cosmic Brownie Cookies without leaving your kitchen? This copycat Crumbl Cosmic Brownie Cookies recipe brings that same chewy center, shiny ganache topping, and rainbow crunch—right to your oven. Whether you’re baking for a party, prepping catering-size treats, or just want a fun family activity, this recipe delivers indulgent bakery-style results in under an hour. Plus, it’s freezer-friendly and customizable. Don’t miss our easy guide to making pumpkin s’mores cookies if you love rich, seasonal twists too!
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Why These Copycat Crumbl Cosmic Brownie Cookies Are So Addictive
Inspired by the Famous Crumbl Bakery Favorites
Crumbl has built a cult following around its rotating menu of oversized, ultra-decadent cookies—and Cosmic Brownie is no exception. This homemade version stays true to the classic with its chewy brownie cookie base and thick, creamy ganache topping. But what makes this version even better? It’s small-batch friendly, designed for easy prep at home, and skips artificial ingredients.
What Makes These Cookies Stand Out from Classic Brownies
Unlike traditional brownies, these cookies are shaped like hockey pucks and baked just until the edges set. That gives you a tender, fudgy center with a slight crisp at the rim—no cutting needed. Plus, the frosting sets up beautifully for stacking or serving.
The Fudge Factor – Texture and Taste Combined
Thanks to a blend of brown sugar, corn syrup, and Dutch-processed cocoa powder, these cookies are incredibly moist without being greasy. The result? A melt-in-your-mouth chocolate experience that’s both soft and structured. Looking for inspiration? Try our chewy maple brown sugar cookies for another soft-bite option.
Ingredients You’ll Need to Make Cosmic Brownie Cookies
Pantry Staples vs. Special Additions
The base dough calls for standard ingredients like all-purpose flour, butter, brown sugar, and vanilla. But two key players elevate this copycat recipe: corn syrup (for fudginess) and Dutch-processed cocoa (for deep chocolate flavor).
Here’s what you’ll need:
| Ingredient | Purpose |
|---|---|
| Salted Butter | Adds richness |
| Brown Sugar | Enhances moisture |
| Granulated Sugar | For balanced sweetness |
| Egg + Egg Yolk | Structure & chewiness |
| Corn Syrup | Fudge texture |
| Vanilla Extract | Flavor depth |
| Flour | Cookie structure |
| Dutch Cocoa | Deep chocolate flavor |
| Cornstarch | Softness |
| Baking Soda | Leavening |
| Salt | Balances flavor |
| Chocolate Chips | Ganache base |
| Heavy Cream | Smooth ganache |
| Candy Coated Chips | Classic topping |
Discover great ideas like our homemade fig newtons if you’re stocking up on versatile baking pantry items.
Why Corn Syrup and Cornstarch Matter in This Recipe
Corn syrup is the not-so-secret ingredient that gives these cookies their signature chewy, brownie-like interior. Meanwhile, cornstarch helps maintain softness for days, making the cookies fridge-friendly and perfect for make-ahead plans.
Where to Find Candy Coated Chocolate Chips
You can usually find these colorful mini chips near the ice cream toppings aisle or online. These are the finishing touch that mimic the nostalgic Cosmic Brownie look. Can’t find them? Mini M&Ms or sprinkles work in a pinch. Don’t miss our classic apple crumb cake for another recipe where topping texture matters.
Step-by-Step Guide to Baking Crumbl-Style Brownie Cookies
Prepping the Dough for Maximum Fudginess
Start by creaming together your butter and sugars until light and fluffy. Add your egg, extra yolk, vanilla, and corn syrup. Then mix in the dry ingredients until a soft dough forms. The consistency should be thick but pliable.
Portion dough into 1½ tablespoon scoops and flatten slightly—think hockey puck shape. Arrange on a lined baking sheet and bake at 350°F for 8–10 minutes.
Baking to Perfect Texture Without Overcooking
Keep an eye out: the cookies should spread just slightly, and the edges should start to crack. Don’t wait for them to look done—pull them out while they’re soft in the center to avoid dry results. Check out our bite-sized Texas sheet cake recipe if you love rich, brownie-like flavors.
Making the Ganache Frosting and Toppings Just Right
While your cookies cool, warm the heavy cream in the microwave, pour it over the chocolate chips, and let sit for 5 minutes. Then whisk smooth. If needed, microwave an extra 15 seconds.
Frost each cookie with a thick swirl of ganache and immediately sprinkle with your candy-coated chips. Let set before stacking or serving.
Pro Tips for the Perfect Copycat Brownie Cookies
How to Get the Signature Cracked Top
One of the most iconic parts of any Crumbl cookie is that cracked, slightly domed top. To recreate this at home, be sure to:
- Use softened, not melted butter.
- Chill the dough for 10–15 minutes if it’s too sticky.
- Slightly flatten the dough before baking—this controls spread and helps form cracks.
Don’t overbake. Remove cookies as soon as the edges are set but the center looks slightly underdone. They’ll firm up as they cool, just like our pumpkin cheesecake cookies, which use the same visual baking cues.
Storing and Reheating for Maximum Enjoyment
For best results, store your cookies in an airtight container in the fridge for up to 5 days. Since the ganache contains heavy cream, refrigeration keeps it safe and firm. Before eating, microwave each cookie for 6–8 seconds to bring back that bakery-style warmth and softness.
Planning a dessert table? Try combining these with our apple crisp mini cheesecakes for a delicious make-ahead duo.
What to Avoid So Your Cookies Don’t Dry Out
- Don’t skip the corn syrup—it’s vital for texture.
- Avoid overbaking or letting the dough sit out too long.
- Never store them uncovered; the ganache can dry and crack.
Freezing and Meal-Prepping Crumbl Cookies for Later
How to Flash-Freeze with Ganache Topping
To freeze, place cooled, frosted cookies on a baking sheet and freeze for 1 hour. This hardens the ganache and prevents sticking. Once firm, layer them in a zip-top bag or airtight container with parchment between each layer.
Flash-freezing is also a technique we use in our freezer-friendly pumpkin pie overnight oats—a great breakfast pairing for make-ahead bakers.
Best Containers for Storage Without Smushing
Choose flat-bottomed, wide containers with snap-lock lids. Stacking cookies is fine once the ganache is firm, but avoid soft plastic bags—they’ll press into the frosting and ruin the presentation.
Use parchment paper or wax paper between layers for extra insurance.
Thawing and Serving for a Fresh-Baked Taste
Let cookies thaw on the counter for 30–45 minutes or reheat briefly in the microwave for that “just baked” feel. You can also eat them chilled for a firmer, fudgier bite—just like the Crumbl bakery does!
Variations and Customization Ideas for Cosmic Cookies
Using Different Chocolates or Sprinkles
Switch things up by using:
- White chocolate chips for a milder ganache
- Peanut butter chips for a Reese’s-style twist
- Colorful jimmies or holiday-themed sprinkles
Want more creative topping ideas? Don’t miss our fruit leather books recipe, perfect for fun and edible presentations.
Turning the Recipe Gluten-Free or Dairy-Free
Need an allergy-friendly version? Swap:
- All-purpose flour with a 1:1 gluten-free blend
- Butter with vegan margarine
- Cream with full-fat coconut milk
The texture will change slightly but still delivers an indulgent cookie experience.
Mini vs Jumbo Size – Catering to Any Crowd
This recipe is already designed for smaller catering-size cookies (about 1½ tbsp dough per cookie), but you can easily:
- Double the size for jumbo cookies like Crumbl’s originals
- Make bite-sized minis for parties or kids’ lunchboxes
- Form cookie bars by baking the dough in a pan and slicing squares
Frequently Asked Questions about Crumbl Cosmic Brownie Cookies
Can I make Crumbl-style cookies without corn syrup?
Yes, but the texture will change. Corn syrup adds chewiness and prevents crystallization in the cookie dough. If you don’t have it, try using honey or maple syrup as a 1:1 substitute—but expect a softer, more cakey texture.
What makes Crumbl cookies so soft and fudgy?
It’s a combination of factors: high moisture from brown sugar, corn syrup, and egg yolk; minimal baking time; and cornstarch for softness. Each ingredient plays a role in creating that signature melt-in-your-mouth bite.
Are Crumbl cookies served warm or chilled?
Both! Crumbl often serves their cookies warm, especially chocolate-based ones. However, cookies like this Cosmic Brownie version are also amazing chilled. In fact, chilling helps the ganache set perfectly for storage and presentation.
Can I double the recipe for a crowd?
Absolutely. This recipe scales well. Just be sure to portion the dough evenly and bake in batches. Use a stand mixer to save time when mixing larger batches. Also consider our Texas Roadhouse rolls recipe for another crowd-pleaser.
Final Thoughts on Making the Best Copycat Crumbl Cosmic Brownie Cookies
These copycat Crumbl Cosmic Brownie Cookies aren’t just a homemade version of a viral favorite—they’re a chocolate lover’s dream, with chewy brownie texture, rich ganache, and fun rainbow crunch in every bite. Whether you’re baking for family night, holiday platters, or a catering event, this recipe brings joy in every cookie.
And the best part? You can store, freeze, and customize them with ease. Looking for your next indulgent bake? Check out our better-than-sex fruit salad recipe for a fruity, no-bake treat that’s just as unforgettable.
PrintCopycat Crumbl Cosmic Brownie Cookies
These Copycat Crumbl Cosmic Brownie Cookies feature a chewy, chocolatey brownie cookie base topped with rich ganache and colorful candy-coated sprinkles. A homemade version of the bakery favorite, perfect for parties or indulgent treats.
- Prep Time: 30 minutes
- Cook Time: 10 minutes
- Total Time: 1 hour 10 minutes (includes chilling and cooling time)
- Yield: 24 small cookies
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
- 3/4 cup salted butter
- 3/4 cup brown sugar
- 1/4 cup granulated sugar
- 1 egg + 1 egg yolk
- 1 tbsp corn syrup
- 1/2 tbsp vanilla extract
- 2 cups all-purpose flour
- 1/2 cup Dutch processed cocoa powder
- 1/2 tbsp cornstarch
- 1 tsp baking soda
- 1/2 tsp salt
- 1 cup semi-sweet chocolate chips (for ganache)
- 4 oz heavy whipping cream
- 1/3 cup candy coated chocolate chips
Instructions
- Preheat oven to 350°F (175°C).
- Cream together butter, brown sugar, and granulated sugar until light and fluffy.
- Add egg, egg yolk, corn syrup, and vanilla extract. Mix well.
- Stir in flour, cocoa powder, cornstarch, baking soda, and salt until a soft dough forms.
- Portion dough into 1½ tbsp scoops, roll into balls, and slightly flatten into a hockey puck shape.
- Place on parchment-lined baking sheet and bake for 8–10 minutes until edges are set and tops slightly cracked.
- Cool cookies on pan while preparing ganache.
- Heat heavy cream in the microwave until steaming. Pour over chocolate chips and let sit 5 minutes.
- Stir ganache until smooth. Microwave an extra 15 seconds if needed for complete melting.
- Spread ganache on cooled cookies and top immediately with candy coated chocolate chips.
- Store in refrigerator for up to 5 days or freeze for up to 3 months.
Notes
- Don’t skip corn syrup—it’s essential for fudgy texture.
- Use Dutch processed cocoa for deeper chocolate flavor.
- Cookies can be eaten chilled or warmed for different textures.
- Freeze cookies after frosting for best storage results.
- Microwave chilled cookies 6–8 seconds before serving for warm texture.
