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
Melt Butter
Place ½ cup unsalted butter in a saucepan over low heat and melt gently, stirring occasionally to prevent browning.
Time: PT2M
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
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
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
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
Portion Batter
Spoon the batter into silicone baking liners or molds placed on a baking sheet, filling each about ¾ full.
Time: PT2M
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
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
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
Set Ganache
Place the topped brownies in the refrigerator for 15 minutes to let the ganache firm up.
Time: PT15M
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






