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Birdseye view of cosmic brownies.

Cosmic Brownies

5 from 1 vote
These Cosmic Brownies are a chocolatey and fudgy chocolate brownie topped with a chocolate buttercream and colorful cosmic sprinkles. They are easy homemade brownies made with all of the nostalgia of Little Debbie cosmic brownies, but none of the preservatives making it a dessert that is a hit with kids and adults alike.
Prep Time:10 minutes
Cook Time:40 minutes
Course: Dessert, Snack
Cuisine: American
Keyword: cosmic brownies, easy homemade brownies, homemade brownies
Servings: 16 Brownies
Calories: 321kcal
Author: Mollie

Ingredients

Brownies

  • cup granulated sugar
  • ¾ cup all-purpose flour
  • cup cocoa powder
  • ½ cup chocolate chips
  • 1 teaspoon sea salt
  • 2 large eggs
  • ½ cup canola oil
  • 2 tablespoon water
  • 1 teaspoon vanilla

Frosting

  • 6 tablespoon softened butter
  • 6 tablespoon cocoa Powder
  • 2 cups powdered sugar
  • 1 teaspoon vanilla extract
  • ¼ cup milk
  • teaspoon salt
  • ¼ cup mini m&ms
  • 1 teaspoon star sprinkles

Instructions

Brownies

  • Preheat oven to 325℉
  • Grease an 8x8 baking dish. If you have anything larger than this
  • In a bowl, mix together the sugar, flour, cocoa powder, sea salt and chocolate chips.
  • In a large bowl whisk together the eggs, oil, water and vanilla.
  • Pour the dry ingredients over the wet ingredients and stir with a wooden spoon or spatula just until everything is incorporated, being careful not to overmix.
  • Bake for 40 minutes and then check them. Poke them with a toothpick and if it comes out clean, they are done. It is better to undercook than overcook these brownies, so if you aren't sure if they are done, go ahead and pull them. They will continue to cook a little more while they cool.

Frosting

  • Beat the butter for about 1 minute until it is light and fluffy.
  • Add the milk, cocoa powder, salt and powdered sugar and continue to beat for another minute. It should be light and easily spreadable. If it is too thick, add another teaspoon of milk.
  • Once the brownies have cooled, spread the frosting on them and then immediately sprinkle the m&m's and colored star sprinkles on top.
  • Let them cool completely (you can pop them in the fridge for 30 minutes or so) before diving in!
  • Enjoy!

Notes

Notes

  • If you don't have an 8x8 cake pan, feel free to use a larger one. Just keep in mind that your brownies will be thinner, but that's ok! Adjust your baking time to 25 minutes, then check them. If a toothpick comes out clean, they are done!
  • These freeze beautifully! Store them in a snap lock container, or gallon sized zip lock bag (try to get as much air out as possible), and they will last in the freezer for about 4 months.
  • I didn't use the brown m&m's, but use whichever colors you like! :)
  • Enjoy!

Nutrition

Calories: 321kcal | Carbohydrates: 48g | Protein: 3g | Fat: 15g | Saturated Fat: 5g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 6g | Trans Fat: 0.2g | Cholesterol: 33mg | Sodium: 211mg | Potassium: 121mg | Fiber: 2g | Sugar: 39g | Vitamin A: 174IU | Vitamin C: 0.02mg | Calcium: 25mg | Iron: 1mg