Simple Graduation Sheet Cake (Printable Version)

Moist vanilla sheet cake with creamy buttercream and colorful Class of 2026 piping, perfect for parties.

# What You'll Need:

→ Cake

01 - 2½ cups all-purpose flour
02 - 2½ teaspoons baking powder
03 - ½ teaspoon salt
04 - 1 cup unsalted butter, softened
05 - 1¾ 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 cup unsalted butter, softened
10 - 4 cups powdered sugar, sifted
11 - ¼ cup whole milk
12 - 2 teaspoons vanilla extract
13 - Pinch of salt
14 - Food coloring for school colors

→ Decoration

15 - Additional food coloring for piping Class of 2026
16 - Sprinkles or edible decorations, optional

# How To Make It:

01 - Preheat oven to 350°F. Grease a 9x13-inch sheet pan and line with parchment paper.
02 - In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
03 - In a large bowl, beat softened butter and granulated sugar together until light and fluffy, approximately 3 minutes.
04 - Add eggs one at a time, beating well after each addition. Mix in vanilla extract until fully combined.
05 - Gradually add the flour mixture in three additions, alternating with milk, beginning and ending with flour. Mix until just combined.
06 - Pour batter into prepared pan and smooth the top with a spatula.
07 - Bake for 30 to 35 minutes, or until a toothpick inserted into the center comes out clean. Cool completely in the pan on a wire rack.
08 - Beat softened butter until creamy. Gradually add sifted powdered sugar, milk, vanilla extract, and salt. Beat for 3 to 5 minutes until fluffy. Divide and tint portions with food coloring as desired.
09 - Spread an even layer of buttercream over the cooled cake using a spatula.
10 - Use colored buttercream in a piping bag fitted with a small round tip to pipe Class of 2026 on top. Add sprinkles or other edible decorations as desired.

# Expert Advice:

01 -
  • It bakes in under an hour and feeds a crowd without making you feel like you've been in the kitchen all day.
  • The buttercream is silky and forgiving—even if you're not a piping expert, the cake looks like you absolutely knew what you were doing.
  • You can personalize it with school colors or any message that matters, turning a simple dessert into something genuinely memorable.
02 -
  • Room-temperature ingredients emulsify properly and create a smooth, homogeneous batter—cold eggs and milk create a lumpy mess that bakes unevenly.
  • The alternating wet-dry method isn't fancy tradition; it's practical science that keeps you from overworking the gluten and ending up with a tough, dense cake.
  • Frosting a warm cake is a rookie mistake that results in a melting, sliding mess—patience here means a cake that looks like you know what you're doing.
03 -
  • Sift your powdered sugar even if it looks fine—unsifted sugar creates tiny lumps that become grainy frosting, and nobody wants that.
  • Gel food coloring beats liquid coloring every time because it won't thin out your buttercream or make it taste metallic.
  • If you want to add extra flavor depth without changing the vanilla character, stir in half a teaspoon of almond extract into the cake batter—it's subtle but noticeable.
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