Joyful Sprinkle Celebration Cake

Preheat the oven to 350°F and set an oven rack in the middle position.

Spray two 8-inch by 2-inch cake pans with nonstick cooking spray and line the bottoms with parchment paper.

In a medium bowl, whisk together the flour, baking powder, baking soda, and salt.

In a separate bowl, using an electric mixer, cream the softened butter and sugar until light and fluffy.

Add the eggs, one at a time, and mix well after each addition. Mix in the vanilla extract.

On low speed, alternately add the whisked dry ingredients in three additions and the buttermilk in two: dry, wet, dry, wet, dry.

Once everything is just incorporated, gently fold in the rainbow sprinkles.

Pour the batter evenly into the prepared cake pans and smooth the top. Bake for 30 to 35 minutes, or until a toothpick inserted in the center comes out clean. Allow the cakes to cool in the pans for about 20 minutes.

Once cool, remove the cakes from the pans and let them cool completely on a wire rack.

Using an electric mixer, beat the softened butter and cream cheese until creamy and evenly combined.

With the mixer on low speed, gradually add the confectioners' sugar and then mix in the vanilla extract and salt. Beat until fluffy.

Once the cakes are completely cool, use a serrated knife to trim off any domed tops.

Place one cake layer on a serving platter, spread a generous layer of frosting on top, and then place the second cake layer.

Frost the sides and top of the cake, ensuring a smooth and even layer.

Press the 1 1/2 cups of rainbow sprinkles onto the sides of the cake and sprinkle them on the top.

Serve your Joyful Sprinkle Celebration Cake or store it at room temperature in a cake dome for up to 3 days.