Simple Graduation Sheet Cake (Print version)

A moist vanilla sheet cake topped with creamy buttercream and colorful Class of 2026 piping.

# What You Need:

→ 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, softened
05 - 1 3/4 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 - 1/4 cup whole milk
12 - 2 teaspoons vanilla extract
13 - Pinch of salt
14 - Food coloring for tinting

→ Decoration

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

# How to Make:

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.
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.
05 - Gradually add flour mixture in three parts, 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 powdered sugar, milk, vanilla, and salt. Beat for 3 to 5 minutes until fluffy. Tint portions with food coloring as desired.
09 - Spread an even layer of buttercream over the cooled cake.
10 - Use colored buttercream in a piping bag fitted with a small round tip to pipe Class of 2026 on top. Add sprinkles or edible decorations as desired.

# Expert tips:

01 -
  • It's genuinely foolproof—the method guarantees a moist, tender crumb that stays soft for days without any fussy techniques.
  • One pan means less cleanup and more time enjoying the party instead of scrubbing dishes.
  • The buttercream is so creamy and pipeable that even if you've never decorated a cake before, your piping will look intentional and beautiful.
02 -
  • Room temperature ingredients are not optional—they blend together smoothly and create a better crumb structure; baking is one of the few places where temperature actually matters that much.
  • Don't open the oven door before 30 minutes have passed or the cake might fall; trust the process even when you're curious about how it's rising.
  • If your powdered sugar frosting looks too thin after beating, let it sit in the fridge for 15 minutes before piping—cold frosting holds its shape so much better.
03 -
  • Use an offset spatula or even a butter knife dipped in hot water to smooth the frosting layer—it gives you professional-looking edges and takes about two extra minutes.
  • Pipe your decorative text in a light shade of frosting first as a guide, let it set for five minutes, then pipe over it in a darker shade for crisp, readable lettering that doesn't smudge.
  • Keep the frosting you're not using in a piping bag in the fridge between decorating sessions so it stays firm and pipeable instead of sliding all over the place.
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