Crumbl Cosmic Brownie Cookie Copycat Recipe

Crumbl Cosmic Brownie Cookie Copycat Recipe is a medium American recipe that serves 12. 250 calories per serving. Recipe by Cooking with Karli on YouTube.

Prep: 28 min | Cook: 32 min | Total: 1 hr 10 min

Cost: $26.47 total, $2.21 per serving

Ingredients

  • 1 cup Salted Butter (softened to room temperature)
  • 1 cup Light Brown Sugar (packed)
  • 0.5 cup Granulated Sugar
  • 2 teaspoons Vanilla Extract (pure vanilla)
  • 2 tablespoons Light Corn Syrup
  • 2 Large Eggs (room temperature)
  • 2.25 cups All-Purpose Flour (sifted)
  • 0.75 cup Dark Dutch-Processed Cocoa Powder (deep chocolate flavor; regular cocoa can be used with slightly lighter taste)
  • 2 tablespoons Cornstarch
  • 1 teaspoon Baking Soda
  • 0.5 teaspoon Salt
  • 1 cup Heavy Whipping Cream (35% fat, for ganache)
  • 8 ounces Semi-Sweet Chocolate Chips (good melting quality)
  • 0.5 cup Candy-Coated Chocolate Chips (for topping; can substitute mini M&Ms)

Instructions

  1. Cream Butter and Sugars

    In a mixing bowl, beat the softened salted butter with the light brown sugar and granulated sugar until the mixture is light, fluffy, and pale in color.

    Time: PT5M

  2. Add Wet Ingredients

    Add the eggs, vanilla extract, and light corn syrup to the creamed butter. Mix on medium speed until fully incorporated, scraping the sides of the bowl as needed.

    Time: PT3M

  3. Incorporate Dry Ingredients

    Sift together the all‑purpose flour, dark Dutch‑processed cocoa powder, cornstarch, baking soda, and salt. Gradually add to the wet mixture, mixing on low until a silky, soft dough forms.

    Time: PT5M

  4. Shape the Dough

    Divide the dough into 12 equal portions (about ½ cup each). Roll each portion into a log, then cut each log into thirds. Flatten each piece gently into a puck‑shaped cookie, leaving space on the baking sheet.

    Time: PT10M

  5. Preheat Oven

    Preheat the oven to 350°F (175°C).

    Time: PT5M

    Temperature: 350°F

  6. Bake Cookies

    Place the prepared cookies on the baking sheet and bake for 15 minutes, or until the tops have spread, flattened, and begin to crackle.

    Time: PT15M

    Temperature: 350°F

  7. Prepare Chocolate Ganache

    While the cookies bake, heat the heavy whipping cream in a microwave‑safe bowl for about 1 minute 30 seconds until hot and bubbling. Immediately add the semi‑sweet chocolate chips, stir, and let sit for 3 minutes. Then stir until smooth and glossy.

    Time: PT7M

  8. Frost and Top Cookies

    Once cookies are removed from the oven and slightly cooled, spoon a generous amount of the warm ganache onto each cookie and spread lightly. Immediately sprinkle candy‑coated chocolate chips over the wet frosting.

    Time: PT10M

  9. Cool and Serve

    Allow the frosted cookies to set for a few minutes. Serve warm for ultimate fudginess, or store as desired.

    Time: PT5M

Nutrition Facts

Calories
250
Protein
3g
Carbohydrates
30g
Fat
13g
Fiber
2g

Dietary info: Vegetarian

Allergens: Dairy, Eggs, Gluten, Soy

Last updated: April 18, 2026

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Crumbl Cosmic Brownie Cookie Copycat Recipe

Recipe by Cooking with Karli

A giant, ultra‑fudgy chocolate cookie that mimics the iconic 90s Cosmic Brownie, finished with a thick chocolate ganache frosting and colorful candy‑coated chocolate chips. Soft, brownie‑like texture with a crackly top.

MediumAmericanServes 12

Shop all ingredients on Amazon in one click • Printable PDF with shopping checklist

Source Video
18m
Prep
47m
Cook
10m
Cleanup
1h 15m
Total

Cost Breakdown

$26.47
Total cost
$2.21
Per serving

Critical Success Points

  • Cream butter and sugars until fluffy
  • Do not over‑mix after adding dry ingredients
  • Shape dough into evenly sized pucks and space them properly
  • Bake until tops crackle, not overbaked
  • Make ganache by melting chocolate in hot cream and let sit

Safety Warnings

  • Handle the hot oven and baking sheet with oven mitts.
  • The cream will be very hot; avoid steam burns when removing the bowl from the microwave.
  • Use a sharp knife carefully when cutting the dough logs.

Frequently Asked Questions

Everything you need to know about this recipe

Q

What is the cultural significance and history of Cosmic Brownie Cookies in American snack culture?

A

Cosmic Brownie Cookies were a popular 1990s snack in the United States, known for their ultra‑fudgy, brownie‑like texture and colorful candy‑coated chocolate chips on top. They became a nostalgic treat for many who grew up with the original pre‑packaged version.

cultural
Q

What are the traditional regional variations of the Cosmic Brownie Cookie within American cuisine?

A

While the original Cosmic Brownie is a national brand, home cooks sometimes swap the candy‑coated chips for regional favorites like Reese’s Pieces in the Midwest or crushed pretzels in the South, adding a local twist to the classic fudgy cookie.

cultural
Q

How is the authentic Cosmic Brownie Cookie traditionally served in the United States?

A

The classic way to serve Cosmic Brownie Cookies is warm, straight from the oven, allowing the ganache to stay soft and the candy chips to melt slightly, creating a gooey, brownie‑like bite.

cultural
Q

What occasions or celebrations are Cosmic Brownie Cookies traditionally associated with in American culture?

A

These cookies are often enjoyed at casual gatherings, school bake sales, and nostalgic 90s‑themed parties, but they also make a fun dessert for birthdays and movie‑night snacks.

cultural
Q

What makes the Cosmic Brownie Cookie special or unique in American snack cuisine?

A

Its combination of an ultra‑fudgy brownie‑style cookie base with a thick chocolate ganache frosting and bright candy‑coated chips creates a texture contrast that is both soft and crunchy, setting it apart from typical chocolate chip cookies.

cultural
Q

What are the most common mistakes to avoid when making Cosmic Brownie Cookies at home?

A

Common errors include over‑softening the butter, which leads to excessive spreading, overbaking which dries the cookie, and not letting the ganache sit long enough to fully melt the chocolate chips, resulting in a grainy frosting.

technical
Q

Why does this Cosmic Brownie Cookie recipe use corn syrup instead of additional sugar?

A

Corn syrup adds extra moisture and prevents crystallization, giving the cookie its signature ultra‑fudgy, chewy texture that mimics the original store‑bought version.

technical
Q

Can I make the Cosmic Brownie Cookies ahead of time and how should I store them?

A

Yes. Bake the cookies up to two days ahead and keep them in an airtight container in the refrigerator. Frost them just before serving or store the ganache separately and spread it on the day you plan to eat.

technical
Q

What texture and appearance should I look for when the Cosmic Brownie Cookies are done baking?

A

The cookies should be flat, slightly spread, with a glossy top that has begun to crackle. The edges will be set, but the center should still look soft and fudgy.

technical
Q

What does the YouTube channel Cooking with Karli specialize in?

A

Cooking with Karli focuses on recreating popular snack and dessert copycat recipes, offering step‑by‑step tutorials that blend nostalgic treats with modern home‑cooking techniques.

channel
Q

How does the YouTube channel Cooking with Karli's approach to American snack copycat recipes differ from other cooking channels?

A

Karli emphasizes detailed ingredient measurements, practical kitchen hacks, and a friendly, energetic presentation style, making nostalgic snack recreations accessible for cooks of all skill levels, unlike many channels that focus solely on gourmet or restaurant‑style dishes.

channel

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