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So are you looking for something fun maybe for a birthday party or just a summer get-together? A rainbow cake is perfect for any summer occasion with its bright colors and and how simple it is to make. Rainbow cakes are huge right now and I’m telling you that I have made this cake super simple to make. Anyone can do it!

When I look at this cake I just smile because sprinkles just do that to me! Or jimmies which ever you prefer. So let’s get down to baking this amazing colorful cake.

Whatcha gonna need:

Ingredients For The Rainbow Cake

• 2 Boxes chocolate fudge cake mix 
• 6 large eggs
• 2 ½ C Whole Milk 
• 1 C unsalted sweet cream, softened 
• 3 9in round cake pans 
• 3 10in round cake board

Vanilla Frosting ingredients

• 2 C unsalted sweet cream butter, softened 
• 6 C powdered sugar 
• 3 tbsp pure vanilla extract 
• 6 tbsp heavy whipping cream 
• Purple gel food coloring 
• Sky Blue gel food coloring 
• 2 10.5 oz Rainbow Jimmie Sprinkles (Found at walmart in the baking isle and cake decorating isle)

I will not lie I am way to busy in the summer to bake a cake from scratch let alone really want to so I used the chocolate fudge cake mix. You can totally use your “grandma’s super secret recipe” or just relax and go box!

So we all know how to make a boxed cake right? You just follow those directions on the? You guessed it….the box.

The fun starts when assembling the cake and decorating it.

Rainbow Cake Frosting Directions

So let’s get the fun started! Using a standing mixer, beat the butter, powdered sugar, vanilla and heavy whipping cream together until combined, smooth and stiff with peaks. Once the frosting is made, divide the 1 ½ C of frosting into 2 small bowls, leaving the rest in the mixing bowl for the outer layer of the cake. In one bowl, mix in 4 drops of purple gel food coloring. In the second bowl, mix in 4 drops of blue gel food coloring.

Building Colorful Cake

So here we go….we are ready to build your amazingly colorful rainbow cake. Remove the cakes from the pans and onto the cake boards.

Using a cake slicer, slice off the tops of the cakes to create a flat cake layer.

Using one of the cake layers as the bottom layer, scoop the purple frosting onto the cake layer and spread evenly 

Place a second cake layer on top 

Scoop the blue frosting on top of the cake layer and spread evenly 

Place the third cake layer on top of the frosting.

Smooth the two frostings on the outside to create a smooth layer on the outside 

Using the white frosting, completely coat the cake in the white frosting and smooth evenly 

Place the cake onto a cookie sheet 

Using the sprinkles, completely coat the cake in the sprinkles 

Once coated, place the in the fridge for a few hours to allow it to harden. That is everything! This is so simple to do and really fun for guests or family.

 One of my favorite parts about this recipe is the layers in between. You don’t have to use these colors, let your imagination take you where every you want to go.

Below you will find a full printable recipe and do make sure to save this. I know you will be making these for all occasions.

How To Make A Rainbow Cake At Home

Ingredients

• 2 Boxes chocolate fudge cake mix
• 6 large eggs
• 2 ½ C Whole Milk
• 1 C unsalted sweet cream, softened
• 3 9in round cake pans
• 3 10in round cake board
• Vanilla Frosting ingredients
• 2 C unsalted sweet cream butter, softened
• 6 C powdered sugar
• 3 tbsp pure vanilla extract
• 6 tbsp heavy whipping cream
• Purple gel food coloring
• Sky Blue gel food coloring
• 2 10.5 oz Rainbow Jimmie Sprinkles (Found at walmart in the baking isle and cake decorating isle)

Instructions

Preheat oven to 350 degrees and spray the cake pans with pam baking spray

Using a large bowl, beat the cake mix, butter, eggs, and milk until combined and smooth

Evenly divide the cake batter between the 3 pans

Place into the oven and bake for 22-26 minutes or until a toothpick comes out clean

Allow to cool completely before covering with foil and setting them aside to use the next day. By doing this, it will allow you to get a clean cut slice of cake

Frosting Directions

Using a standing mixer, beat the butter, powdered sugar, vanilla and heavy whipping cream together until combined, smooth and stiff with peaks

Once the frosting is made, divide the 1 ½ C of frosting into 2 small bowls, leaving the rest in the mixing bowl for the outer layer of the cake

In one bowl, mix in 4 drops of purple gel food coloring

In the second bowl, mix in 4 drops of blue gel food coloring

Building the cake directions

Remove the cakes from the pans and onto the cake boards

Using a cake slicer, slice off the tops of the cakes to create a flat cake layer

Using one of the cake layers as the bottom layer, scoop the purple frosting onto the cake layer and spread evenly

Place a second cake layer on top

Scoop the blue frosting on top of the cake layer and spread evenly

Place the third cake layer on top of the frosting

Smooth the two frostings on the outside to create a smooth layer on the outside

Using the white frosting, completely coat the cake in the white frosting and smooth evenly

Place the cake onto a cookie sheet

Using the sprinkles, completely coat the cake in the sprinkles

Once coated, place the in the fridge for a few hours to allow it to harden

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