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Preheat your oven to 350°F (175°C). Grease and flour two 6-inch round cake pans, or line with parchment paper circles.

In a medium bowl, whisk together the all-purpose flour, granulated sugar, baking powder, and salt. Set aside.

In a large bowl, using an electric mixer, cream the softened unsalted butter until light and fluffy. Beat in the large eggs one at a time, mixing well after each addition. Stir in the vanilla extract.

Gradually add the dry ingredients to the wet ingredients, alternating with the whole milk. Begin and end with the dry ingredients. Mix on low speed until just combined and no streaks of flour remain. Be careful not to overmix.

Gently fold in 1/2 cup of rainbow sprinkles into the cake batter.

Divide the batter evenly between the two prepared cake pans. Bake for 25-28 minutes, or until a wooden skewer inserted into the center of the cakes comes out clean.

Let the cakes cool in their pans on a wire rack for 10 minutes. Then, carefully invert them onto the wire rack to cool completely before frosting. This can take up to an hour.

While the cakes cool, prepare the vanilla buttercream frosting. In a large bowl, using an electric mixer, beat the softened unsalted butter until creamy. Gradually add the powdered sugar, beating until smooth. Stir in the vanilla extract. Add the heavy cream or milk, one tablespoon at a time, until your desired frosting consistency is reached.

Once the cakes are completely cool, level the tops with a serrated knife if necessary. Place one cake layer on a serving plate or cake stand. Spread a generous layer of buttercream frosting on top. Place the second cake layer on top and frost the entire cake, including the sides.

Decorate the frosted cake with the remaining 1/4 cup of rainbow sprinkles. Serve and enjoy your celebration cake!


Preheat your oven to 350°F (175°C). Grease and flour two 6-inch round cake pans, or line with parchment paper circles.

In a medium bowl, whisk together the all-purpose flour, granulated sugar, baking powder, and salt. Set aside.

In a large bowl, using an electric mixer, cream the softened unsalted butter until light and fluffy. Beat in the large eggs one at a time, mixing well after each addition. Stir in the vanilla extract.

Gradually add the dry ingredients to the wet ingredients, alternating with the whole milk. Begin and end with the dry ingredients. Mix on low speed until just combined and no streaks of flour remain. Be careful not to overmix.

Gently fold in 1/2 cup of rainbow sprinkles into the cake batter.

Divide the batter evenly between the two prepared cake pans. Bake for 25-28 minutes, or until a wooden skewer inserted into the center of the cakes comes out clean.

Let the cakes cool in their pans on a wire rack for 10 minutes. Then, carefully invert them onto the wire rack to cool completely before frosting. This can take up to an hour.

While the cakes cool, prepare the vanilla buttercream frosting. In a large bowl, using an electric mixer, beat the softened unsalted butter until creamy. Gradually add the powdered sugar, beating until smooth. Stir in the vanilla extract. Add the heavy cream or milk, one tablespoon at a time, until your desired frosting consistency is reached.

Once the cakes are completely cool, level the tops with a serrated knife if necessary. Place one cake layer on a serving plate or cake stand. Spread a generous layer of buttercream frosting on top. Place the second cake layer on top and frost the entire cake, including the sides.

Decorate the frosted cake with the remaining 1/4 cup of rainbow sprinkles. Serve and enjoy your celebration cake!
