Cosmic Brownie Heart Dupe!

Cosmic Brownie Heart Dupe! is a medium American recipe that serves 12. 250 calories per serving. Recipe by Gregory Mason on YouTube.

Prep: 20 min | Cook: 18 min | Total: 48 min

Cost: $7.32 total, $0.61 per serving

Ingredients

  • 0.5 cup Unsalted Butter (melted in a saucepan over low heat)
  • 1 cup Brown Sugar (packed)
  • 1 cup Granulated Sugar (white granulated)
  • 2 Large Eggs (room temperature)
  • 2 Egg Yolks (separated from whites)
  • 1 tsp Vanilla Extract (pure vanilla extract)
  • 1.25 cup All-Purpose Flour (sifted)
  • 1.25 cup Unsweetened Cocoa Powder (high‑quality, such as Ghirardelli)
  • 1 tsp Cornstarch (helps keep brownies tender)
  • 1 tsp Salt (kosher or sea salt)
  • 0.25 cup Vegetable Oil (neutral‑flavored oil)
  • 1 cup Heavy Cream (35% milkfat, for ganache)
  • 1 cup Semi‑Sweet Chocolate Chips (60% cacao, high‑quality)
  • 2 tbsp Rainbow Sprinkles (optional, for topping)

Instructions

  1. Melt Butter

    Place ½ cup unsalted butter in a saucepan over low heat and melt gently, stirring occasionally to prevent browning.

    Time: PT2M

  2. Combine Sugars

    Add 1 cup brown sugar and 1 cup granulated sugar to the melted butter. Stir continuously until the mixture is smooth and the sugars are fully dissolved.

    Time: PT2M

  3. Add Eggs and Vanilla

    Whisk in 2 whole eggs, 2 egg yolks, and 1 tsp vanilla extract until fully incorporated and the batter looks glossy.

    Time: PT2M

  4. Mix Dry Ingredients

    In a separate bowl, whisk together 1 ¼ cup all‑purpose flour, 1 ¼ cup unsweetened cocoa powder, 1 tsp cornstarch, and 1 tsp salt.

    Time: PT1M

  5. Combine Wet and Dry, Add Oil

    Fold the dry mixture into the wet mixture until just combined. Drizzle in ¼ cup vegetable oil and stir until the batter is thick, shiny, and slightly glossy.

    Time: PT3M

  6. Portion Batter

    Spoon the batter into silicone baking liners or molds placed on a baking sheet, filling each about ¾ full.

    Time: PT2M

  7. Bake Brownies

    Bake in a pre‑heated oven at 350°F for 18 minutes, checking at 15 minutes. The tops should look set but the center will still be slightly soft.

    Time: PT18M

    Temperature: 350°F

  8. Prepare Ganache

    While the brownies bake, heat 1 cup heavy cream in a small saucepan until just scalding (small bubbles form around the edges). Remove from heat and pour over 1 cup chocolate chips in a bowl. Let sit 2 minutes, then whisk until smooth and glossy.

    Time: PT5M

  9. Cool and Top

    Allow the baked brownies to cool in the pan for about 10 minutes. Then spread the ganache evenly over each brownie using a spatula. Sprinkle rainbow sprinkles on top if desired.

    Time: PT10M

  10. Set Ganache

    Place the topped brownies in the refrigerator for 15 minutes to let the ganache firm up.

    Time: PT15M

  11. Serve

    Pop the brownies out of the liners, arrange on a platter, and serve. Store leftovers as directed.

    Time: PT1M

Nutrition Facts

Calories
250
Protein
3g
Carbohydrates
30g
Fat
14g
Fiber
3g

Dietary info: Vegetarian, Contains Gluten, Contains Dairy, Contains Eggs

Allergens: Gluten, Dairy, Eggs, Soy (in chocolate chips)

Last updated: April 18, 2026

Amazon Associates

Amazon Associates PartnerTrusted

As an Amazon Associate, we earn from qualifying purchases made through links on this page. This helps support our site at no extra cost to you. Clicking on ingredient or equipment links will take you to amazon.com where you can purchase these items.

Cosmic Brownie Heart Dupe!

Recipe by Gregory Mason

A copycat version of the iconic Cosmic Brownies, these fudgy, shiny brownies are topped with a silky chocolate ganache and rainbow sprinkles for a nostalgic treat perfect for Galentine's Day or any celebration.

MediumAmericanServes 12

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

Source Video
28m
Prep
33m
Cook
10m
Cleanup
1h 11m
Total

Cost Breakdown

$7.32
Total cost
$0.61
Per serving

Critical Success Points

  • Melt butter without browning
  • Mix until batter is thick, shiny, and glossy
  • Do not over‑bake; brownies should remain fudgy
  • Heat cream just to scalding and whisk ganache promptly

Safety Warnings

  • Butter and sugar mixture is hot; handle with care to avoid burns.
  • Scalding cream can cause severe burns; keep face away from steam.
  • Use oven mitts when handling hot baking sheet.

Frequently Asked Questions

Everything you need to know about this recipe

Q

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

A

Cosmic Brownies originated in the 1990s as a popular snack sold in convenience stores and school cafeterias across the United States. Their bright rainbow sprinkles and fudgy texture made them a nostalgic treat for a generation that grew up with packaged desserts.

cultural
Q

How did the original Cosmic Brownies become associated with the “Galentine’s Day” trend?

A

Galentine’s Day, a celebration of female friendships, gained popularity on social media in the 2010s. The colorful, shareable nature of Cosmic Brownies makes them a perfect, playful dessert for the occasion, leading many creators to feature them in Galentine’s brunch spreads.

cultural
Q

What are the traditional regional variations of fudgy brownies like Cosmic Brownies in the United States?

A

While the classic version uses chocolate chips and rainbow sprinkles, some regions add peanut butter swirls, caramel ribbons, or use dark chocolate for a richer flavor. In the Pacific Northwest, a maple‑infused brownie variation is popular, whereas the South often incorporates pecans.

cultural
Q

What authentic ingredients are used in the original Cosmic Brownies compared to this homemade dupe?

A

The original packaged Cosmic Brownies contain processed vegetable oils, artificial colors, and preservatives. This homemade dupe uses real butter, high‑quality cocoa, pure vanilla, and natural rainbow sprinkles, eliminating additives while preserving the signature fudgy texture.

cultural
Q

What other American desserts pair well with Cosmic Brownie Dupe for a Galentine’s Day brunch?

A

Pair the brownies with classic brunch items such as fluffy pancakes, fresh fruit parfaits, or a citrus‑y mimosa. A side of vanilla bean yogurt and a drizzle of honey balances the rich chocolate flavor.

cultural
Q

Why does this Cosmic Brownie Dupe recipe use both butter and oil instead of just one fat?

A

Butter provides flavor and a glossy texture, while oil adds extra moisture without solidifying when the brownies cool. The combination creates the signature fudgy, “juicy” crumb that mimics the store‑bought version.

technical
Q

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

A

Common errors include over‑baking, which turns the brownies hard; overheating the cream for ganache, which causes a grainy texture; and over‑mixing the batter, which can incorporate too much air and make the brownies cakey.

technical
Q

How do I know when the Cosmic Brownies are done baking?

A

The tops should look set and slightly cracked, but a gentle touch in the center will still feel soft. Insert a toothpick; it should come out with a few moist crumbs, not clean batter.

technical
Q

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

A

Yes. Bake the brownies, let them cool, spread the ganache, and refrigerate for 15 minutes. Store the finished brownies in an airtight container in the fridge for up to three days or freeze for longer storage.

technical
Q

What does the YouTube channel Gregory Mason specialize in?

A

The YouTube channel Gregory Mason focuses on fun, approachable home‑cooking tutorials that often remix nostalgic snack foods and classic desserts with a modern twist, emphasizing clear step‑by‑step instructions and playful presentation.

channel

You Might Also Like

Similar recipes converted from YouTube cooking videos

Homemade Cosmic Brownies with Fudge Glaze and Tempered Chocolate Candy Pieces
60

Homemade Cosmic Brownies with Fudge Glaze and Tempered Chocolate Candy Pieces

A copycat of Little Debbie Cosmic Brownies that actually tastes good. Dense, chewy chocolate brownies are topped with a firm fudge glaze and speckled with tiny tempered chocolate candies coated in a crisp sugar shell and colored with natural food dyes.

2 hrs 15 minServes 12$15
American
The Ultimate Cosmic Brownie Protein Ice Cream Recipe!
10

The Ultimate Cosmic Brownie Protein Ice Cream Recipe!

A macro‑friendly, high‑protein ice cream that tastes like a rich chocolate brownie while staying under 300 calories per pint. Made with Fairlife milk, almond milk, and a blend of protein powders and low‑calorie add‑ins, this recipe uses the Ninja Creami to create a dense, creamy treat you can enjoy every day.

12 hrs 38 minServes 1$85
American
Low-Calorie Cosmic Brownie Protein Ice Cream
6

Low-Calorie Cosmic Brownie Protein Ice Cream

A low‑calorie, high‑protein frozen treat that tastes like a dense chocolate brownie. Made with four layers of chocolate flavor, this protein ice cream delivers about 300 calories and 42 g of protein per serving, perfect for fitness enthusiasts and dessert lovers alike.

2 hrs 18 minServes 2$3
American
Little Debbie Cosmic Brownies at Home
6

Little Debbie Cosmic Brownies at Home

A homemade version of Little Debbie's iconic Cosmic Brownie. Moist chocolate brownies topped with a glossy chocolate glaze and colorful sprinkles, baked in an 8×8 pan and chilled for a perfect snap.

1 hr 41 minServes 9$9
American
High protein cosmic brownie
15

High protein cosmic brownie

Thick, fudgy brownies packed with 15× the protein of a regular brownie. Made with black cocoa powder for a deep dark color and flavored with a hint of sweetness, these Cosmic Brownies are perfect for fitness enthusiasts who still want a decadent treat.

45 minServes 12$48
American (Fitness‑Focused)
Cosmic brownie cookie ice cream sandwich
21

Cosmic brownie cookie ice cream sandwich

Soft, chewy sourdough brownie cookies studded with all‑natural rainbow chocolate chips, sandwiched around a generous layer of vanilla ice cream. The cookies are naturally fermented for extra flavor and a fudgy texture, making a fun twist on the classic ice cream sandwich.

12 hrs 50 minServes 12$22
American