Homemade Cosmic Brownie Recipe

Introduction

These homemade cosmic brownies are a delightful treat, combining a rich chocolate base with a creamy ganache topping and colorful rainbow chips. Perfectly fudgy and packed with chocolate, they make a fun and festive dessert for any occasion.

A single square piece of chocolate brownie with a soft and moist brown base layer topped with a thick, glossy dark chocolate frosting that has a slightly melted texture on the edges, decorated with small colorful round and teardrop-shaped sprinkles in pink, purple, yellow, green, orange, and brown scattered on top and around the white marbled surface. The brownie has a bite taken out from the middle of the front edge, showing its dense and chewy interior. In the background, there are stacked brownie pieces and a white bowl filled with similar sprinkles. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

  • 1 cup granulated white sugar
  • 1 cup brown sugar
  • 2 teaspoons vanilla extract
  • 1/2 teaspoon salt
  • 2 large eggs
  • 2 large egg yolks
  • 8 tablespoons unsalted butter
  • 8 ounces chocolate chips
  • ½ cup vegetable oil
  • 1 ¼ cups all-purpose flour
  • ¼ cup unsweetened cocoa powder
  • ½ cup heavy cream
  • 1.5 cups chocolate chips
  • ¼ cup rainbow chocolate chips

Instructions

  1. Step 1: Preheat the oven to 350°F (175°C). Line a 9×13 inch baking dish with parchment paper and spray with cooking spray. Set aside.
  2. Step 2: In a large bowl, whisk together the granulated sugar, brown sugar, vanilla extract, salt, eggs, and egg yolks until fully combined.
  3. Step 3: In a microwave-safe bowl, melt the butter and 8 ounces of chocolate chips by microwaving for 30 seconds, stirring, then repeating until smooth.
  4. Step 4: Whisk the vegetable oil into the melted chocolate mixture until incorporated.
  5. Step 5: Pour the chocolate mixture into the sugar and egg mixture, mixing until well combined. Gently fold in the flour and cocoa powder until just combined.
  6. Step 6: Pour the brownie batter into the prepared pan and bake for 30 to 35 minutes, or until a toothpick inserted in the center comes out clean.
  7. Step 7: To make the ganache, heat the heavy cream in a microwave-safe bowl for 1 minute. Add 1.5 cups chocolate chips and let stand for 2 minutes, then stir until smooth.
  8. Step 8: Pour the ganache evenly over the warm brownies and immediately sprinkle the rainbow chocolate chips on top.
  9. Step 9: Allow the brownies to cool completely before slicing and serving.

Tips & Variations

  • Use good-quality chocolate chips for a richer flavor and smoother ganache.
  • If you prefer a fudgier texture, slightly underbake the brownies by 3-5 minutes.
  • Substitute rainbow chips with chopped nuts or white chocolate chips for different textures.

Storage

Store the cooled brownies in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week. To reheat, warm individual pieces briefly in the microwave for about 10 seconds to soften the ganache.

How to Serve

A square chocolate dessert is cut into 16 small squares. The dessert has two visible layers: a bottom layer of dense, dark chocolate brownie and a thick, smooth top layer of shiny chocolate frosting. The frosting is decorated with colorful sprinkles in red, yellow, green, blue, and orange, scattered evenly across the surface. The dessert rests on crumpled brown parchment paper, which lies on a white marbled textured surface. Around the parchment paper are several polished stones in blue, green, brown, and gray colors. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use dark chocolate instead of semi-sweet chocolate chips?

Yes, dark chocolate can be used and will give the brownies a deeper, more intense chocolate flavor. Adjust the amount of sugar slightly if you prefer them less bitter.

Do I have to use vegetable oil in the batter?

Vegetable oil helps keep the brownies moist and tender, but you can substitute it with melted coconut oil or another mild-flavored oil if desired.

Print

Homemade Cosmic Brownie Recipe

This Homemade Cosmic Brownie recipe features rich, fudgy brownies topped with a luscious chocolate ganache and colorful rainbow chocolate chips, delivering a nostalgic and indulgent treat perfect for any occasion.

  • Author: Mia
  • Prep Time: 15 minutes
  • Cook Time: 35 minutes
  • Total Time: 50 minutes
  • Yield: 12 servings 1x
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Ingredients

Scale

Brownie Batter

  • 1 cup granulated white sugar
  • 1 cup brown sugar
  • 2 teaspoons vanilla extract
  • 1/2 teaspoon salt
  • 2 large eggs
  • 2 large egg yolks
  • 8 Tablespoons unsalted butter
  • 8 ounces chocolate chips
  • ½ cup vegetable oil
  • 1 ¼ cups all-purpose flour
  • ¼ cup unsweetened cocoa powder

Ganache

  • ½ cup heavy cream
  • 1.5 cups chocolate chips

Topping

  • ¼ cup Rainbow Chocolate Chips

Instructions

  1. Prepare Oven and Pan: Preheat your oven to 350°F. Line a 9×13 inch baking dish with parchment paper and generously spray with cooking spray to prevent sticking.
  2. Mix Sugars and Eggs: In a large bowl, combine granulated sugar, brown sugar, vanilla extract, salt, whole eggs, and egg yolks. Whisk thoroughly until the mixture is smooth and homogenous.
  3. Melt Butter and Chocolate: Place butter and 8 ounces of chocolate chips in a microwave-safe bowl. Microwave in 30-second intervals, stirring between each, until fully melted and smooth.
  4. Add Oil to Chocolate: Stir vegetable oil into the melted chocolate mixture until well incorporated.
  5. Combine Chocolate with Sugar Mixture: Pour the chocolate mixture into the sugar-egg mixture and mix until fully combined.
  6. Fold in Dry Ingredients: Gently fold in all-purpose flour and cocoa powder, mixing just until combined to avoid overworking the batter.
  7. Bake the Brownies: Pour the brownie batter into the prepared pan and bake in the preheated oven for 30 to 35 minutes. Check doneness by inserting a toothpick into the center; it should come out clean.
  8. Heat Cream for Ganache: Pour heavy cream into a microwave-safe bowl and heat in the microwave for 1 minute until just hot but not boiling.
  9. Prepare Ganache: Add 1.5 cups chocolate chips to the heated cream. Let sit for 2 minutes, then stir vigorously until the ganache is smooth and glossy.
  10. Apply Ganache and Add Toppings: Pour ganache evenly over the cooled brownies using an offset spatula for smoothness. Immediately sprinkle with rainbow chocolate chips so they stick.
  11. Cool and Serve: Allow the brownies to cool completely so the ganache sets before slicing into pieces.

Notes

  • Use parchment paper for easy removal and clean edges.
  • Do not overbake to keep the brownies fudgy.
  • Let brownies cool before topping with ganache to prevent melting the chips.
  • Microwave melting in short intervals prevents burning the chocolate.
  • For added texture, use chunky or salted chocolate chips in the batter.

Keywords: Cosmic Brownies, homemade brownies, chocolate ganache, rainbow chocolate chips, fudgy brownies, easy dessert

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