Chocolate Cosmic Brownie Cake

There’s something about chocolate that just makes everything feel better. Whether it’s a delicious brownie or a slice of chocolate cake, this sweet treat always seems to hit the spot. This Chocolate Cosmic Brownie Cake is no exception! It’s chocolatey, decadent, and absolutely perfect for any occasion. Plus, it’s easy to make – so you can impress your friends and family with your baking skills!

Chocolate Cosmic Brownie Cake on a white plate with a red clothe

We are not really sure what happened. One minute we were mixing up a cake batter, and the next we had created this chocolatey, cosmic monstrosity. But you know what? It’s delicious. And it just might be the most delicious cake we’ve ever made. So if you’re looking for something over-the-top and extra chocolatey, then this is the cake for you!

Seriously, this is one amazing cake. But be warned- it’s not for the faint of heart. It’s rich, decadent, and absolutely delicious. So if you’re up for the challenge, scroll down for the recipe!

Chocolate Cosmic Brownie Cake Recipe

There are few things in life as satisfying as biting into a rich, chocolatey brownie cake. With its deep chocolate flavor and moist, fudgy texture, it’s no wonder this dessert is a classic favorite. This recipe takes the beloved brownie to new cosmic heights, incorporating rich chocolate frosting and fluffy layers of devil’s food cake. Be warned: One slice of this decadent cake may be enough to satisfy your sweet tooth for days!

If you love Little Debbie Cosmic Brownies then you are going to love this cake! It’s everything you love about those iconic brownies, all wrapped up in a delicious chocolate cake. So if you’re looking for an over-the-top chocolate treat, then this is the recipe for you!

This cake is great for a rich dessert any day of the week, but you can also make this cake for your next galaxy themed party or great super creative and throw a Little Debbie birthday party.

Chocolate Cosmic Brownie Cake on cake stand

Chocolate Cosmic Brownie Cake Ingredients

To make this delicious cake you will need a handful full of basic ingredients. You may already have these ingredients on hand which can save you a trip to the grocery store.

Chocolate Cake Ingredients

  • Triple chocolate cake mix
  • Large eggs
  • Whole milk
  • Unsalted sweet cream butter, softened

Chocolate Frosting ingredients

  • Unsalted sweet cream butter, softened
  • Hershey’s cocoa powder
  • Powdered sugar
  • Pure vanilla extract

Garnish Ingredients

  • Cosmic Brownies
  • Chocolate rainbow crunch sprinkles
Chocolate Cosmic Brownie Cake on white plate with a red napkin and cake in background

Chocolate Cosmic Brownie Cake Instructions

There are a lot of steps to making this cake, and the list may seem overwhelming but this cake is worth the effort we promise.  The following is a step by step guide on how to make this delicious cake.

Step 1: Preheat the oven and prepare the baking pan

Preheat the oven to 350 degrees and spray cake pans with pam baking spray, set aside.

Step 2: Mix together the cake mix, eggs, milk and butter

Using a standing mixer or hand held mixer, beat together the cake mix, eggs, milk and butter until smooth and combined.

Step 3: Bake the cake layers

Split the batter between the 3 pans and bake for 25 -30 minutes or until a toothpick comes out clean.

Step 4: Cool the cakes completely.

Once baked, remove from the oven and allow to cool completely.

Chocolate Frosting Directions

Step 1: Beat together the frosting ingredients

Using a standing mixer or hand held mixer, beat all ingredients until combined, smooth and stiff peaks form.

Step 2: Add some of the frosting to a piping bag

Scoop about 1 1/2 C frosting into the piping bag and set aside.

Building the cake directions

Step 1: Leave out of cakes

Using the cake leveler, cut the domes off the cake rounds to make them leveled.

Step 2: Place the cake on a cake board

Place one cake round onto the cake board.

scoops of frosting on chocolate cake layer

Step 3: Add the frosting to the cake

Scoop 1 1/2 C of the chocolate frosting onto the top of the cake and smooth evenly with the angled spatula.

chocolate layer cake with frosting spread on it

Step 4: Add another cake round

Place another cake round on top of the first one.

Step 5: Frost the second cake layer

Scoop another 1 1/2 C of the chocolate frosting onto the second cake round and smooth evenly.

chocolate layered cake with frosting inbetween

Step 6: Add the last cake round

Place the third cake round on top of the second one.

Step 7: Add the remaining frosting

Scoop remaining chocolate frosting onto the top of the cake and frost the entire cake.

Step 8: Add the cake to a stand

Place the cake on a cake stand in the middle of a cookie sheet.

Step 9: Add the sprinkles to the bottom of the cake

Sprinkle some of the rainbow sprinkles around the bottom of the cake.

Step 10: Chill the cake to harden the frosting

Place cake into the fridge for an hour to allow the frosting to firm up.

Step 11: Decorate the cake

Pipe dollops of chocolate frosting along the top of the cake.

Step 12: Top the cake with brownies

Place a piece of cosmic brownie in between the chocolate frosting.

Step 13: Add more sprinkles to the cake

Sprinkle some more rainbow sprinkles around the top.

Step 14: Serve and enjoy

Cut into slices and enjoy!

Hint: If you find that chocolate cake gives off too many crumbs, freeze the cake layers before frosting.

PIN IT!!

Chocolate Cosmic Brownie Cake in white plate and on cake stand

Chocolate Cosmic Brownie Cake Equipment

You only need a few kitchen tools to help you make this delicious chocolate brownie cake.

  • 3 9inch round cake pans
  • 1 – 10 inch round cake board
  • 1 large piping bag fitted with a star tip
  • Mixing bowls
  • Electric Mixer
  • Cake leveler
  • Angled Spatula
Chocolate Cosmic Brownie Cake on white plate

Storage

Store this cake in an airtight container for up to five days.  I recommend storing this cake in the fridge.

Tips

Here are some helpful tips to make sure that your Chocolate Brownie Cake turns out perfectly.

  • Make sure to use a good quality chocolate cake mix.
  • Use pam baking spray to coat your cake pans for easy release. Making sure you are using baking spray not cooking spray.
  • Bake the cake layers until a toothpick comes out clean.
  • Allow the cake layers to cool completely before frosting.
  • Use room temperature butter for your frosting so that it comes out smoothly.
  • If you don’t have a piping bag on hand, you can use a large Ziploc type storage bag.

More Delicious Chocolate Recipes

Do you love chocolate cake recipes? Here are a few chocolate cake recipes that you may enjoy.

Chocolate Cake with Peanut Butter Frosting

Double Chocolate Cupcake

Three Ingredient Chocolate Cake with Icing

Chocolate Cosmic Brownie Cake FAQ

Do you have questions about this Chocolate Brownie Cake? Here are the answers to the most commonly asked questions about this recipe.

Can I use a different type of chocolate cake mix?

Yes, you can use any type of chocolate cake mix that you like.

Can I use a different type of frosting?

Yes, you can use any type of frosting that you like. Though, we recommend that you give this chocolate frosting a try, it’s divine.

Can I freeze the cake?

Yes, you can freeze the cake. We recommend freezing the cake before frosting it.

Chocolate Cosmic Brownie Cake on white plate with cake in background

Why You’ll Love This Chocolate Cosmic Brownie Cake Recipe

This Chocolate Cosmic Brownie Cake is truly out of this world! It’s got a rich chocolate flavor and a delicious, fudgy texture that will make you feel like you’re floating among the stars. Plus, it’s really easy to make – perfect for any cosmic adventurer looking for an out-of-this-world dessert experience. So what are you waiting for? Start baking!

MORE RECIPES YOU WILL LOVE:

Cocoa Puffs Cheesecake

Caramel Apple Rose Tart Puff Pastry

Air Fryer Peanut Butter Cookies

Boston Cream Pie Poke Cake

BLUEBERRY MERINGUE

Paula Deen’s Ooey Gooey Butter Cake

Chocolate Cosmic Brownie Cake on a white plate with a red clothe

Chocolate Cosmic Brownie Cake

When it comes to cake, there are a lot of options. But if you want something truly delicious, give this Chocolate Cosmic Brownie Cake a try.
3 from 2 votes
Print Pin Rate
Course: Dessert
Cuisine: American
Prep Time: 35 minutes
Cook Time: 24 minutes
Servings: 12 Servings

Ingredients

For the Cake:

  • 2 boxes of triple chocolate cake mix 
  • 6 large eggs
  • 2 Cups whole milk
  • 2/3 Cup unsalted sweet cream butter, softened 
  • 3 9 inch round cake pans 
  • 1 10 inch round cake board

For the Chocolate Frosting:

  • 4 Cups unsalted sweet cream butter, softened
  • 1 Cup Hershey’s cocoa powder
  • 8 Cups powdered sugar
  • 1 tsp vanilla extract
  • 1 large piping bag fitted with a star tip

For the Garnish:

  • Cosmic Brownies
  • 3 Cups of chocolate rainbow crunch sprinkles

Instructions

  • Preheat oven to 350 degrees and spray cake pans with pam baking spray, set aside.
  • Using a standing mixer or hand mixer, beat together the cake mix, eggs, milk and butter until smooth and combined. Split the batter between the 3 pans and bake for 25 -30 minutes or until a toothpick comes out clean. Once baked, remove from oven and allow to cool completely.
  • Using a standing mixer or hand mixer, beat all ingredients until combined, smooth and stiff peaks form. Scoop about 1 1/2 C frosting into the piping bag and set aside.

Building the cake directions

  • Using the cake leveler, cut the domes off the cake rounds to make them leveled. Place one cake round onto the cake board. Scoop 1 1/2 C of the chocolate frosting onto the top of the cake and smooth evenly with the angled spatula. Place another cake round on top of the first one.
  • Scoop another 1 1/2 C of the chocolate frosting onto the second cake round and smooth evenly. Place the third cake round on top of the second one. Scoop remaining chocolate frosting onto the top of the cake and frost entire cake.
  • Place cake on a cake stand in the middle of a cookie sheet. Sprinkle some of the rainbow sprinkles around the bottom of the cake.
  • Place cake into the fridge for an hour to allow the frosting to firm up. Pipe dollops of chocolate frosting along the top of the cake.
  • Place a piece of cosmic brownie in between the chocolate frosting. Sprinkle some more rainbow sprinkles around the top. Cut into slices and enjoy!

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