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Birthday Balloon Number Cakes

By: Cayla Gallagher
Published: August, 29 2021 Last Updated: August, 17 2023
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Birthday Balloon Number Cakes

Confetti cake that looks like those trendy number balloons! These are such a fun birthday cake idea and can be made in rose gold, gold and silver! FULL RECIPE & LINKS BELOW!
Course dessert
Cuisine american

Ingredients

Cake batter:

  • 1 cup unsalted butter room temperature
  • 2 cups granulated sugar
  • 2 tsp vanilla extract
  • 6 large eggs
  • 3 cups all-purpose flour
  • 1 tsp baking soda
  • 1 tsp salt
  • 1 ¼ cups sour cream
  • 1 cup confetti sprinkles

Buttercream:

  • 2 cups unsalted butter room temperature
  • 2 tsp vanilla extract
  • 5 cups confectioner’s sugar
  • pink food coloring
  • Edible ink pen
  • Pink metallic food spray

Instructions

Bake the cake:

  • Place the butter and sugar in a bowl and beat with an electric mixer until pale and fluffy. Add the vanilla, then the eggs one at a time, mixing with each addition.
  • In a separate bowl, mix together the flour, baking soda and salt. Add this to the butter mixture in 2 additions, alternating with the sour cream. Add the confetti sprinkles and mix to combine.
  • Pour the batter into a greased and floured 9×13 inch pan and smooth the surface. Bake at 350F for 40-50 minutes, until a skewer inserted into the center comes out clean. Cool completely.
  • If you are making double digits, repeat the process to make the second cake. If you want to make the batter for both cakes in one batch, you’ll need a BIG bowl!

Make the buttercream:

  • Beat the butter with an electric mixer until pale and fluffy. Add the vanilla extract and mix to combine.
  • Add the confectioner’s sugar one cup at a time, then mix for 3-4 minutes, until light and fluffy.
  • Add a couple drops of pink food coloring to dye it a pale pink color.

Assembly:

  • Use an edible ink pen to draw the number onto the surface of the cake, in a block letter style. Make sure the number is as thick as possible, approximately 4-5 inches wide at each point.
  • Use a serrated knife to carve the cake along the lines. Then round the edges of the number, to make it look like a rounded balloon. Place the cake on a cake board at this point, as the odd shape of the cake will make moving it difficult, once it is frosted.
  • Cover the entire cake in a thin layer of buttercream. Place the cake in the fridge for 20 minutes, to chill. Then coat the cake in a generous layer of buttercream. Smooth the buttercream as much as possible.
  • Place the remaining buttercream into a piping bag fitted with a large, angled piping tip. Place the widest side of the piping tip against the cake and pipe a ruffle around the entire number.
  • Spray the entire cake with the metallic food spray. To protect the rest of your kitchen, use your hand or a sheet of paper to catch the overspray on the opposite side of the cake. Enjoy!

Video

Keyword Cake
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Cayla Gallagher

Cayla Gallagher

Hi everyone! My name is Cayla Gallagher, and I’m the creator of Pankobunny!
 

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