# What You Need:
→ Sheet Cake
01 - 2 1/2 cups all-purpose flour
02 - 2 1/2 teaspoons baking powder
03 - 1/2 teaspoon salt
04 - 1 cup unsalted butter, room temperature
05 - 2 cups granulated sugar
06 - 4 large eggs, room temperature
07 - 1 tablespoon vanilla extract
08 - 1 cup whole milk, room temperature
→ Buttercream Frosting
09 - 1 1/2 cups unsalted butter, room temperature
10 - 6 cups powdered sugar, sifted
11 - 2 teaspoons vanilla extract
12 - 4–6 tablespoons milk or heavy cream
13 - Food coloring (school colors and black for piping as desired)
→ Decoration
14 - Sprinkles, edible glitter, or colored sugar (optional)
# Directions:
01 - Preheat oven to 350°F. Grease a 13x18-inch sheet pan and line with parchment paper.
02 - Whisk flour, baking powder, and salt in a medium bowl until well blended.
03 - Beat unsalted butter and granulated sugar in a large bowl with an electric mixer until pale and fluffy, approximately 3 to 4 minutes.
04 - Add eggs one at a time, mixing thoroughly after each addition. Blend in vanilla extract.
05 - Add the dry mixture to the wet ingredients in three additions, alternating with milk. Begin and end with dry ingredients. Stir only until incorporated.
06 - Transfer the batter to the prepared sheet pan. Smooth the surface with an offset spatula.
07 - Bake for 30 to 35 minutes, or until a toothpick inserted in the center comes out clean.
08 - Allow sheet cake to cool completely in the pan on a wire rack.
09 - Beat butter on medium speed until creamy, about 2 minutes. Gradually add powdered sugar. Mix in vanilla extract and 4 to 6 tablespoons milk or heavy cream until smooth and desired consistency is achieved.
10 - Separate frosting into portions; tint each with food coloring for base, borders, and piping as needed.
11 - Spread a smooth layer of colored buttercream over cooled cake. Use piping bags fitted with round or star tips to pipe borders and ‘Class of 2026’. Apply sprinkles or edible decorations if desired.
12 - Chill decorated cake for 30 minutes to set frosting before slicing and serving.
