Polka Dot Inside-And-Out Birthday Cake

Polka Dot Inside-And-Out Birthday Cake

This cake has gone dotty — polka dotty, that is! Sprin­kles and polka dot surprise-inside col­or­ful cake balls will make this a birth­day cake one to remem­ber! I used cake mix to make this super fun party cake — kids can help make this too by shap­ing the cake balls with clean hands!

What You’ll Need

  • 3 boxes of white cake mix
  • Gel food col­or­ing in your favorite col­ors (I used pink and blue)
  • 1 bak­ing sheet lined with parch­ment paper
  • Round cake pans — I used three 7 x 2 inch round pans.
  • 4 cups of your favorite vanilla buter­cream recipe, or 2 cans of frosting
  • Non-pareil rain­bow sprin­kles (the round sprinkles)
  • Parch­ment paper sheet for stencil
  • Scis­sors
  • An off­set spatula

Step 1

Polka Dot Inside-And-Out Birthday Cake

Start by mix­ing together one box of the cake mix. Divide bat­ter into two bowls; color one bowl with pink gel food col­or­ing and the other with blue. Pour bat­ter into your greased and floured cake pans. Bake accord­ing to the cake box instruc­tions for HALF THE RECOMMENDED TIME. You want to make ooey gooey under­baked cakes in order to form cake balls. Take the cakes out of the oven; remove con­tents of each pan into bowls and mash it up to make a gooey mess. Form cake balls (this will get sticky — use a bit of corn­starch on your hands) and place them on a lined bak­ing sheet. Freeze for 20 minutes.

Step 2

Polka Dot Inside-And-Out Birthday Cake

In your greased and floured cake pans, place the cold from the freezre cake balls in ran­dom orders into each pan.

Step 3

Polka Dot Inside-And-Out Birthday Cake

Make the other two cake box mixes accord­ing to box instruc­tions. Pour the bat­ter over top of the cake balls! Bake accord­ing to cake box instruc­tions; set to cool on wire racks completely.

Step 4

Polka Dot Inside-And-Out Birthday Cake

Once cakes are cooled, remove from cake pans and use a ser­rated knife to level the tops if need be. Place a dab of but­ter­cream on a cake board or cake plate and place the first cake layer on top, lev­elled side up. Using your off­set spat­ula, add a fill­ing of buttercream.

Step 5

Polka Dot Inside-And-Out Birthday Cake

Con­tin­u­ing stack­ing and fill­ing cakes, end­ing with the top layer leveled-side down. Isn’t this exciting? :)

Step 6

Polka Dot Inside-And-Out Birthday Cake

Frost the entire exte­rior of your cake with a crumb coat; this seals in the crumbs. Place the cake in the freezer for 15 min­utes to set the but­ter­cream layer.

Step 7

Polka Dot Inside-And-Out Birthday Cake

Remove the cake from the freezer and apply another coat of but­ter­cream, smooth­ing it out as best as you can. Place in the freezer once again for 15 min­utes! You’ll want a some­what chilled cake for the next step, the out­side polka dots!

Step 8

Polka Dot Inside-And-Out Birthday Cake

Using scis­sors, cut round holes into a sheet of parch­ment paper to make a delight­fully dotty DIY sten­cil. You can be even-steven with this or more willy-nilly — up to you!

Step 9

Polka Dot Inside-And-Out Birthday Cake

Remove your cake from the freezer. Very gen­tly, place the parch­ment paper on the cake, press­ing down ever so lightly to adhere a touch.

Step 10

Polka Dot Inside-And-Out Birthday Cake

This will be a bit messy — you can set your cake on top of a clean bak­ing sheet to catch the sprin­kles if you like — but grab a hand­ful of sprin­kles, and swiftly pat the sides of your cake with the sprin­kles! Do it a few times to ensure full polka dot coverage!

Polka Dot Inside-And-Out Birthday Cake

Once you’ve done the sides, care­fully pull away the parch­ment paper sten­cil — polka dots!

Step 11

Polka Dot Inside-And-Out Birthday Cake

Using the same sten­cil or a fresh one, place on the top of the cake and con­tinue adding sprinkles!

Polka Dot Inside-And-Out Birthday Cake

Dec­o­rate with col­or­ful polka dot washi tape flags!

Polka Dot Inside-And-Out Birthday Cake

But the best moment of all… cut­ting into this cake! Polka dot slices!

Polka Dot Inside-And-Out Birthday Cake

Cutest cake ever!?? Hope you enjoyed this polka dotty tutorial—would love to see your results! See you again real soon with another cake dec­o­rat­ing DIY!