Homemade Cosmic Brownies (TikTok Version)

5 from 4 votes

Homemade Cosmic Brownies (TikTok Version)

Fudgy and rich, these homemade cosmic brownies are a throwback to Little Debbies Cosmic dense brownie treat! Viral TikTok recipe.

Prep Time15

Cook Time26

Chill1

Course: Dessert Recipes

Cuisine: American

Keyword: chocolate, dessert, tiktok

Servings: brownies

Calories: 132kcal

Author: Trisha Haas - Salty Side Dish

Equipment

Parchment Paper
9 x 13 Baking Dish

Ingredients

Brownie Mix

¾ cup melted butter
1½ granulated white sugar
½ brown sugar
3 eggs
1 egg yolk
1 tsp vanilla extract
¼ cup vegetable oil
1 cup flour
2 tbsp cornstarch
1½ cup unsweetened cocoa powder
1 tsp salt
¼ tsp baking soda

Chocolate Frosting

12 oz. semi-sweet chocolate chips
½ cup milk
6 tbsp butter
2.2 oz. rainbow chips

Instructions

Preheat the oven to 350 and line a 9x13 baking pan with parchment paper and spray with nonstick cooking spray. Set the baking pan aside.
Add melted butter, white and brown sugar, 3 eggs and egg yolk, vanilla extract, and vegetable oil in a mixing bowl and mix well. Set bowl aside.
In a separate mixing bowl, combine all-purpose flour, cornstarch, cocoa powder, salt, and baking soda and mix well.
Add dry ingredients to wet and mix until combined. Pour brownie batter into the prepared pan.
Bake brownies for 25 minutes or until edges begin to brown.
Remove baking dish from oven and cool completely.
Add chocolate chips, milk, and butter to a saucepan and heat over low heat, stirring constantly until frosting is smooth and shiny.
Cool topping slightly before pouring on top of baked brownies.
Top with rainbow chips.
Cool and refrigerate brownies and frosting for an hour.
Remove parchment paper and brownies from the pan and cut into 24 bars.
Store leftover cosmic brownies covered in the refrigerator.

Notes

We always suggest pre-measuring and prepping ingredients prior to beginning the recipe. This ensures proper wet and dry ingredient measurements and have the best baking results.

Nutrition