This homemade Cosmic brownie recipe is so easy to make and impossible to resist!

The fudgy brownie base, velvety chocolate ganache topping, and rainbow of sprinkles creates a trio of indulgence like no other!

Simple pantry ingredients come together quickly and easily to create a decadent hand held treat.

cosmic brownie recipe in the background, with one piece on a white plate in the front

Best Hand Held Treat

  • This Cosmic brownie recipe is a chocolate lovers dream!
  • These homemade brownies have a delicious fudgy texture and rich cocoa flavor that is incredibly delicious.
  • With simple ingredients and an easy process, this recipe is a delight to make AND to eat!
  • Brownies make the best lunchbox or after school treat, or even a mid-day energy boost!
brown sugar, granulated sugar, vanilla, flour, salt, cornstarch, eggs, butter and cocoa to make cosmic brownie recipe

Ingredients and Variations

Brownie Base:

Sugar – The combination of granulated and brown sugar helps these brownies stay deliciously moist. In a pinch, all of one type could also be used.

Butter – There is no substitute for real unsalted butter, so no sub-ins allowed here! But if all you have on hand is salted butter, simply omit the salt in the recipe

Cocoa – Use Dutch-processed cocoa in this recipe for it’s smooth, rich flavor. But natural cocoa will also work.

Flour – All purpose flour is perfect for brownies, but for a gluten free option sub in gluten free flour at a 1:1 ratio.

Chocolate Ganache:

Chocolate Chips – Use quality chocolate chips! Dark chocolate and semi sweet chocolate chips will work as well.

Cream – Heavy cream blends with the chocolate chips when heated for a decadent topping.

Oil – The coconut oil helps create that glossy finish, but regular cooking oil will also work in a pinch.

How To Make Cosmic Brownies

  1. Preheat oven and prepare baking pan.
  2. Combine melted butter and sugars together. Mix in eggs and vanilla, then fold in flour, cocoa powder, cornstarch and salt.
  3. Fold batter into pan and bake as directed in the recipe. Cool.
  4. Heat chocolate chips and cream until warm, mix until smooth. Add coconut oil.
  5. Spread ganache over cooled brownie base. Top with sprinkles.
cosmic brownies recipe in a parchment lined pan

Tips For Cosmic Brownie Success

  • Line baking pan with parchment paper for quick and easy removal. This step also makes the brownies super easy to slice.
  • To achieve the glossy ganache coating, be sure to add the coconut oil in the last step!
  • Mix in addin’s such as chocolate chips, nuts, coconut, cream cheese or a swirl of peanut butter for extra interest.
  • For a more chewy texture, slightly under-bake the brownies. And the small addition of cornstarch will help keep the brownies moist and delicious!
  • Chop up Cosmic brownies and mix into ice cream for the best Cosmic brownie sundae!
cosmic brownie recipe in parchment paper, with one piece slightly lifted out

Best Storage Solutions

Be sure to cool Cosmic brownies well before storing.

Cut Cosmic brownies into squares and place them in an airtight container. If there is more than one layer, be sure to separate each layer with parchment paper.

Store brownies at room temperature for up to 3 days, or refrigerate for up to a week.

Cosmic brownies can also be frozen for up to a month. Freeze separated and in a single layer, then move to a container. Separate with parchment paper if possible.

Thaw at room temperature, or enjoy slightly frozen for a cool treat.

slices of cosmic brownie recipe on a parchment lined paper, one stacked on another with a bite taken out

More Brownies To Love!

Have you tried this Cosmic Brownie Recipe? Leave a comment and rating below!

cosmic brownie recipe in the background, with one piece on a white plate in the front
5 from 3 votes↑ Click stars to rate now!
Or to leave a comment, click here!

Cosmic Brownie Recipe

This homemade Cosmic brownie recipe is easy to make and impossible to resist!
Prep Time 15 minutes
Cook Time 20 minutes
Refrigerate 2 hours
Total Time 35 minutes
Servings 16 pieces
Author Donnalea Ferguson

Ingredients  

  • ½ cup butter
  • ½ cup sugar
  • ½ cup brown sugar
  • 2 eggs
  • 1 teaspoon vanilla
  • ¾ cup flour
  • cup cocoa
  • 1 teaspoon cornstarch
  • ¼ teaspoon salt

Ganache Frosting

Instructions 

  • Line an 8"x8" pan with parchment paper. Preheat oven to 350˚F
  • In a medium bowl, whisk melted butter and sugars together. Add the eggs and vanilla. Mix well.
  • Stir in the flour, cocoa, cornstarch and salt. Mix until no clumps remain. Drop the batter by spoonfuls into prepared pan and bake for 20-25 minutes or until a toothpick comes out mostly clean. Cool on rack, then in the refrigerator for 1 hour.

Ganache Frosting

  • In a microwave safe bowl, add chocolate chips and cream. Heat for 30 seconds, stir and heat for 30 seconds again. If needed, heat for 2 – 20 second intervals, until chocolate is melted. Add coconut oil and mix.
  • Pour ganache frosting over cooled brownies, and allow to set for 5 minutes. Sprinkle with candies and refrigerate 1 hour or until firm. Remove from pan before slicing.

Notes

  • Use parchment paper to line baking pan.
  • Add oil to achieve the glossy ganache coating.
  • Add mix-in’s to the brownie base if desired.
  • Do not over-bake brownie!
  • Cool Cosmic brownies completely before storing.
  • Store at room temperature for up to 3 days, or refrigerate for up to a week. Brownies can be frozen for up to a month.
5 from 3 votes↑ Click stars to rate now!
Or to leave a comment, click here!

Nutrition Information

Calories: 224 | Carbohydrates: 27g | Protein: 2g | Fat: 13g | Saturated Fat: 8g | Polyunsaturated Fat: 0.5g | Monounsaturated Fat: 3g | Trans Fat: 0.2g | Cholesterol: 47mg | Sodium: 96mg | Potassium: 120mg | Fiber: 1g | Sugar: 20g | Vitamin A: 320IU | Vitamin C: 0.04mg | Calcium: 29mg | Iron: 1mg

Nutrition information does not include optional ingredients or garnish and is an estimate. It may change based on actual ingredients and cooking methods used.

Course Dessert
Cuisine American

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About the author

I am a wife, mother of two, and professional accountant. I love fantastic food, and it is so often the center of our lives, from everyday dinner, to family gatherings, and special evenings at fabulous restaurants. I have always loved cooking and baking, with my mom and grandma, and now, with my daughter and son. I love trying new recipes while enjoying my favorites too. I’m so happy to share them with you.
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