# What You’ll Need:
→ Sponge Cake
01 - 1 2/3 cups all-purpose flour
02 - 1 cup granulated sugar
03 - 1/2 cup unsalted butter, softened
04 - 3 large eggs, room temperature
05 - 1/2 cup whole milk
06 - 2 teaspoons baking powder
07 - 1/2 teaspoon salt
08 - 1 tablespoon pure vanilla extract
→ Buttercream Frosting
09 - 1 cup unsalted butter, softened
10 - 3 cups powdered sugar, sifted
11 - 2 tablespoons whole milk
12 - 1 teaspoon pure vanilla extract
13 - Pinch of salt
→ Decoration
14 - 1/4 cup colorful sprinkles
# Step-by-Step Guide:
01 - Preheat oven to 350°F. Grease and line an 8-inch round cake pan with parchment paper.
02 - Using an electric mixer, beat butter and sugar until light and fluffy, approximately 3 minutes.
03 - Beat in eggs one at a time, ensuring each is fully mixed before adding the next, then stir in vanilla extract.
04 - Whisk together flour, baking powder, and salt in a separate bowl.
05 - Alternately add the dry ingredients and milk to the wet mixture in three batches, starting and ending with dry ingredients. Mix until just incorporated.
06 - Pour batter into prepared pan and smooth surface. Bake 28 to 32 minutes until a toothpick inserted in the center comes out clean.
07 - Allow cake to cool in pan for 10 minutes, then transfer to wire rack to cool completely.
08 - Beat butter until creamy. Gradually add powdered sugar, milk, vanilla, and salt; continue beating until smooth and fluffy.
09 - Slice cake horizontally into two layers. Spread frosting evenly between layers, then cover top and sides.
10 - Garnish with colorful sprinkles. Slice and serve.
