Cosmic Brownies

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April 24, 2026

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Out of This World Cosmic Brownies Recipe

Cosmic Brownies are a nostalgic treat that takes us back to our childhood lunchboxes, but with this homemade recipe, you can enjoy them fresh out of your own oven. These fudgy, chocolatey delights are topped with a glossy chocolate ganache and sprinkled with colorful candy-coated chips, making them a feast for both the eyes and the taste buds. Whether you’re a fan of the classic Little Debbie treats or just discovering them, this recipe will transport you to a cosmic realm of deliciousness.

Ingredients

For the Brownies:

  • ¾ cup all-purpose flour (90 grams): For a gluten-free version, use a 1-to-1 gluten-free flour.
  • ⅔ cup unsweetened cocoa powder (56 grams)
  • 12 tablespoons unsalted butter (170 grams, melted; 1½ sticks): Salted butter can be used, but omit the kosher salt.
  • 1 cup granulated sugar (200 grams): Brown sugar can also be used for a deeper flavor.
  • ½ cup brown sugar (107 grams)
  • 2 large eggs (50 grams each, room temperature)
  • 1 teaspoon pure vanilla extract (4 grams)
  • ¾ teaspoon kosher salt
  • 1 cup chocolate chips (170 grams): Use milk, semisweet, or dark chocolate chips based on preference.

For the Topping:

  • ½ cup heavy cream (114 grams)
  • ¼ cup rainbow candy-coated chocolate chips (43 grams): Mini M&M’s or rainbow sprinkles can also be used.

Instructions

Step 1: Prepare Your Baking Pan

Preheat your oven to 325°F (163°C). Spray a 9×9-inch baking pan with nonstick spray. Line it with parchment paper, allowing some to hang over the edges for easy removal later. Set aside.

Step 2: Mix the Dry Ingredients

In a medium bowl, whisk together the flour and cocoa powder until evenly combined. This step ensures no lumps of cocoa remain.

Step 3: Combine the Wet Ingredients

In a separate large bowl, whisk together the melted butter, granulated sugar, and brown sugar until smooth. Add in the eggs, vanilla extract, and kosher salt, whisking until the mixture is well combined.

Step 4: Form the Brownie Batter

Gradually add the dry flour mixture to the wet ingredients. Stir until just combined, being careful not to overmix. Overmixing can lead to tough brownies.

Step 5: Bake the Brownies

Pour the batter into the prepared baking pan, using a spatula to spread it evenly. Bake for 30-35 minutes, or until a toothpick inserted into the center comes out with just a few moist crumbs. Allow the brownies to cool completely in the pan.

Step 6: Prepare the Ganache

While the brownies are cooling, prepare the ganache. In a small pot, heat the heavy cream over medium heat until it just begins to simmer. Remove from the heat and add the chocolate chips. Stir until the chocolate is completely melted and the mixture is smooth.

Step 7: Frost and Decorate

Pour the chocolate ganache evenly over the cooled brownies. Use a spatula to spread it to the edges. Immediately sprinkle the rainbow candy-coated chocolate chips over the top. For best results, refrigerate or freeze the brownies to let the frosting set before slicing and serving.

Tips for Success

  • Pan Lining: Don’t skip lining your pan with parchment paper. This will help you lift the brownies out easily for clean slicing.
  • Cutting Brownies: For clean cuts, dip a sharp knife in hot water and wipe it dry between slices.
  • Butter Substitution: You can substitute the butter with a neutral oil like vegetable, canola, or coconut oil. However, the texture might be slightly less soft.

Nutritional Information

A delicious plate of Cosmic Brownies

Each brownie contains approximately: – Calories: 287 – Carbohydrates: 35g – Protein: 3g – Fat: 16g – Saturated Fat: 10g – Sodium: 126mg – Fiber: 2g – Sugar: 28g

Note: Nutritional values are estimates and can vary based on ingredient variations.

Cosmic Brownies are a delightful treat that’s sure to please both kids and adults alike. Whether you’re making them for a party or just to satisfy a chocolate craving, they’re guaranteed to be a hit. Enjoy your journey to cosmic deliciousness!

A delicious plate of Cosmic Brownies

Cosmic Brownies

Rich and fudgy cosmic brownies topped with a luscious chocolate ganache and rainbow candy chips for a delightful treat!
Prep Time 20 minutes
Cook Time 35 minutes
Cooling Time 30 minutes
Total Time 55 minutes
Servings: 16 brownies
Course: Dessert
Cuisine: American
Calories: 287

Ingredients
  

Brownie Base
  • 90 g all-purpose flour for gluten-free use a 1-1 flour
  • 56 g unsweetened cocoa powder
  • 170 g unsalted butter melted (1½ sticks), salted works too, if using omit the kosher salt
  • 200 g granulated sugar or use brown sugar
  • 107 g brown sugar
  • 100 g large eggs room temperature
  • 4 g pure vanilla extract
  • ¾ tsp kosher salt
  • 170 g chocolate chips milk, semisweet, or dark chocolate chips all work
Frosting
  • 114 ml heavy cream
  • 43 g rainbow candy-coated chocolate chips for topping, use mini M&M’s or rainbow sprinkles instead

Equipment

  • 9×9-inch baking pan
  • Kitchen Scale (optional)

Method
 

  1. Preheat oven to 325°F. Spray a 9×9-inch baking pan with nonstick spray and line it with parchment paper. Set aside.
  2. In a medium bowl, whisk the flour and cocoa powder together.
  3. In a separate larger bowl, whisk the butter and sugars together.
  4. Add in the eggs, vanilla extract, and salt.
  5. Add the flour mixture to the wet ingredients and stir until just combined. Do not overmix the batter.
  6. Pour the batter into the pan, and use a spatula to spread it out.
  7. Bake for 30-35 minutes, or until a toothpick comes out nearly clean. Allow brownies to cool.
  8. While the brownies are baking, place 1/2 cup of heavy cream in a pot and add 1 cup of chocolate chips. Heat, stirring until the chocolate is melted and smooth.
  9. Spread the frosting out over the brownies. Then, sprinkle rainbow chips over the frosting.
  10. Refrigerate or freeze to let the frosting set before enjoying!

Notes

You can use a neutral oil, such as vegetable, canola, or coconut oil, in place of the butter, but your brownies may not turn out as soft. To cut these brownies cleanly, dip a knife in hot water, then wipe it off between slices.

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CREATED BY POLLY

Polly is the creator of Adrian Recipes, where she shares easy, family-friendly recipes designed for busy home cooks.

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