Simple Graduation Sheet Cake (Printable version)

Moist vanilla sheet dessert with creamy buttercream and festive Class of 2026 piping, ideal for celebrations.

# Ingredient List:

→ 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 as desired

→ Decoration

15 - Food coloring for piping
16 - Sprinkles or edible decorations, optional

# How-To Steps:

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 until evenly distributed.
03 - In a large bowl, beat softened butter and 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 parts, alternating with milk, beginning and ending with flour. Mix until just combined, being careful not to overmix.
06 - Transfer batter into prepared pan and smooth the top with a rubber spatula for even baking.
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 powdered sugar, milk, vanilla, and salt. Beat for 3 to 5 minutes until light and fluffy. Divide and tint portions with food coloring as desired.
09 - Spread an even layer of buttercream over the completely cooled cake using an offset spatula.
10 - Transfer colored buttercream into piping bags fitted with small round tips. Pipe Class of 2026 and desired designs on cake surface. Add sprinkles or edible decorations as desired.

# Expert Advice:

01 -
  • Perfect for feeding a crowd with 16 generous servings
  • Easy enough for beginner bakers but impressive enough for any celebration
  • Customizable with school colors and personal decorations
  • Classic vanilla flavor that appeals to all ages
  • Can be made ahead and stored for party convenience
02 -
  • Use gel food coloring instead of liquid for more vibrant colors without thinning the frosting
  • Practice your piping on parchment paper before decorating the cake
  • Sift the powdered sugar for the smoothest, lump-free buttercream
  • Keep a glass of warm water nearby to clean your piping tip between colors
  • If the buttercream becomes too soft while decorating, refrigerate it for 10-15 minutes to firm up
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