# Ingredient List:
→ 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 and line a 13x18-inch sheet pan with parchment paper.
02 - In a medium mixing bowl, whisk together all-purpose flour, baking powder, and salt until evenly blended.
03 - In a large bowl, use an electric mixer to beat unsalted butter and granulated sugar at medium speed until light and fluffy, approximately 3–4 minutes.
04 - Add eggs one at a time, beating after each addition. Add vanilla extract and mix until fully incorporated.
05 - Gradually add dry ingredients to the wet mixture in three portions, alternating with whole milk. Begin and finish with dry mixture. Mix until just combined, avoiding overmixing.
06 - Pour batter into the prepared sheet pan and use an offset spatula to smooth the surface.
07 - Bake for 30–35 minutes, or until a toothpick inserted into the center emerges clean.
08 - Allow cake to cool completely in the pan on a wire rack.
09 - Beat butter with an electric mixer at medium speed for 2 minutes until creamy. Gradually add powdered sugar while beating. Mix in vanilla and milk or heavy cream until desired consistency is reached.
10 - Divide frosting into batches and tint with food coloring for base, borders, and Class of 2026 piping.
11 - Spread a smooth layer of colored frosting over cooled cake. Pipe decorative borders and the Class of 2026 message using piping bags with writing and star tips. Finish with sprinkles, edible glitter, or colored sugar as desired.
12 - Refrigerate cake for 30 minutes to allow frosting to set prior to slicing and serving.
