I love a dash of creativity in my kitchen. Making Homemade Cosmic Brownies from scratch is a delightful adventure full of rich chocolate goodness and a burst of rainbow charm. I relish the journey from mixing ingredients to the delightful surprises baked into every absolutely irresistible fudgy, chewy bite imaginable.

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I’ve been experimenting in my kitchen and finally stumbled upon the perfect Cosmic Brownies recipe. This isn’t your average treat – it’s a copycat version that will rival the ones from the store without any preservatives.

I’ve combined 1/2 cup melted unsalted butter with 1 cup granulated sugar, stirring in 2 large eggs (at room temp) and 1 teaspoon of vanilla extract to create a smooth mixture. Then I mix in 1/3 cup unsweetened cocoa powder, 1/2 cup all-purpose flour, 1/4 teaspoon salt, and 1/4 teaspoon baking powder, building a foundation that’s super fudgy and chewy.

The best part? Sprinkling 3/4 cup of rainbow sprinkles on top gives it that buzz-worthy cosmic aesthetic.

I was amazed how easy it was to make these brownies from scratch. If you’re into easy baking recipes and cosmic brownie vibes, you gotta try making these at home.

Enjoy the journey of taste!

Why I Like this Recipe

I love this recipe because it’s super rich and fudgy which gives me that perfect chewy texture everytime I bite into one. I also like that it’s made completely from scratch with simple ingredients—feels way better than store bought stuff with all those preservatives. Plus, I get a fun kick out of the colorful rainbow sprinkles that turn every bite into a little party in my mouth. And honestly, it’s such an easy recipe to whip up—even on busy days I can still enjoy a warm, homemade treat.

Ingredients

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Melted butter adds rich flavor and moist texture but brings extra fat.
Sugar gives sweetness and structure, but in high amounts its not very healthy.
Eggs add protein and richness, binding ingredients and boosting creaminess in the brownies.
Vanilla extract enhances overall flavor with a sweet, aromatic hint that complements cocoa.
Cocoa powder offers intense chocolate taste and antioxidants, balancing sweetness with slight bitterness.
Flour serves as the base, binding ingredients together and giving structure to the brownies.
Sprinkles add festive color and extra sweetness, making each bite a fun cosmic experience.

Ingredient Quantities

1/2 cup unsalted butter, melted

1 cup granulated sugar

2 large eggs, at room temp

1 teaspoon vanilla extract

1/3 cup unsweetened cocoa powder

1/2 cup all-purpose flour

1/4 teaspoon salt

1/4 teaspoon baking powder

3/4 cup rainbow sprinkles (or more if ya like ’em on top)

How to Make this

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1. Preheat your oven to 350°F and grease an 8×8 inch pan so the brownies dont stick.

2. In a medium bowl, mix together the melted butter and granulated sugar until they’re well combined.

3. Beat in the eggs one at a time along with the vanilla extract until the mixture is smooth.

4. Sift in the cocoa powder, all-purpose flour, salt, and baking powder then stir gently until just combined.

5. Fold in about half of the rainbow sprinkles into the batter to add some colorful texture.

6. Pour the batter into the prepared pan and smooth the top with a spatula.

7. Sprinkle the remaining rainbow sprinkles over the top generously in a single, even layer.

8. Bake in your preheated oven for about 20-25 minutes until a toothpick inserted in the center comes out with a few moist crumbs.

9. Remove from the oven and let the brownies cool completely in the pan before cutting into squares.

10. Enjoy your homemade cosmic brownies fresh out of the oven or store them in an airtight container for later snacking.

Equipment Needed

1. Preheated oven (set to 350°F)
2. 8×8 inch baking pan (need to be greased)
3. Medium mixing bowl for combining ingredients
4. Whisk (or fork) to beat eggs and mix butter with sugar
5. Sifter to add cocoa powder, flour, salt, and baking powder smoothly
6. Spatula for folding in sprinkles and smoothing the batter on the pan
7. Toothpick to check if the brownies are done (it should come out with a few moist crumbs)

FAQ

What are Cosmic Brownies? Cosmic Brownies are a twist on classic brownies that include fun rainbow sprinkles throughout giving them a colorful and extra festive look.

Can I freeze leftover brownies? Yes you can freeze them; just wrap in plastic then in foil and let them thaw at room temperature before eating.

How do i avoid overbaking these brownies? Keep an eye on them towards the end of the baking time and check with a toothpick so they stay fudgy and moist.

Can i substitute salted butter for unsalted? You can but make sure to reduce the extra salt in the recipe cause salted butter may make the brownies taste a bit too salty.

What should i do if my eggs are not at room temperature? If you forget to take them out earlier you can place them in a bowl of warm water for about 10 minutes so they mix better with the other ingredients.

Cosmic Brownies Recipe Substitutions and Variations

Butter: You can swap out the unsalted butter for an equal amount of coconut oil or even salted butter if thats what you have.
Sugar: If you dont have granulated sugar, you can try using brown sugar for a richer flavor, though it might alter the texture a bit.
Eggs: For a dairy-free twist, use 1/4 cup of unsweetened applesauce per egg instead of the large eggs.
Vanilla extract: If you are out of vanilla, a couple of drops of almond extract or even a spoonful of maple syrup can add some interesting flavor notes.
Rainbow sprinkles: If you dont like sprinkles or want to be a bit more creative, try mini chocolate chips or colored sugar to top off the brownies.

Pro Tips

1. Make sure you sift out your dry ingredients really well cause lumps can mess with the texture and you dont want weird bursts of flour in your brownies.
2. Dont rush mixing the batter too much when you fold in the sprinkles otherwise you might end up with a gloopy mess that effects the even distribution of color and flavor.
3. Always use eggs at room temperature even if you think its no big deal because they mix in more smoothly and give you a better overall rise in your batter.
4. Once you take your brownies out of the oven, let them cool completely in the pan – if you cut them too soon they might crumble apart and lose that fudgy feel.

Cosmic Brownies Recipe

Recipe by Tina Bueller

0.0 from 0 votes

Servings

servings

Calories

144

kcal

Equipment: 1. Preheated oven (set to 350°F)
2. 8×8 inch baking pan (need to be greased)
3. Medium mixing bowl for combining ingredients
4. Whisk (or fork) to beat eggs and mix butter with sugar
5. Sifter to add cocoa powder, flour, salt, and baking powder smoothly
6. Spatula for folding in sprinkles and smoothing the batter on the pan
7. Toothpick to check if the brownies are done (it should come out with a few moist crumbs)

Ingredients

1/2 cup unsalted butter, melted
1 cup granulated sugar
2 large eggs, at room temp
1 teaspoon vanilla extract
1/3 cup unsweetened cocoa powder
1/2 cup all-purpose flour
1/4 teaspoon salt
1/4 teaspoon baking powder
3/4 cup rainbow sprinkles (or more if ya like 'em on top)

Directions

Preheat your oven to 350°F and grease an 8×8 inch pan so the brownies dont stick.
In a medium bowl, mix together the melted butter and granulated sugar until they’re well combined.
Beat in the eggs one at a time along with the vanilla extract until the mixture is smooth.
Sift in the cocoa powder, all-purpose flour, salt, and baking powder then stir gently until just combined.
Fold in about half of the rainbow sprinkles into the batter to add some colorful texture.
Pour the batter into the prepared pan and smooth the top with a spatula.
Sprinkle the remaining rainbow sprinkles over the top generously in a single, even layer.
Bake in your preheated oven for about 20-25 minutes until a toothpick inserted in the center comes out with a few moist crumbs.
Remove from the oven and let the brownies cool completely in the pan before cutting into squares.
Enjoy your homemade cosmic brownies fresh out of the oven or store them in an airtight container for later snacking.

Notes

Below you’ll find my best estimate of this recipe’s nutrition facts. Treat the numbers as a guide rather than a rule—great food should nourish both body and spirit. Figures are approximate, and the website owner assumes no liability for any inaccuracies in this recipe.