Graduation Sheet Cake Buttercream Roses (Printable)

Moist vanilla sheet cake topped with creamy buttercream and decorative piped roses for a festive celebration.

# Ingredient List:

→ Sheet Cake

01 - 3 cups all-purpose flour
02 - 2.5 teaspoons baking powder
03 - 0.5 teaspoon baking soda
04 - 0.5 teaspoon salt
05 - 1 cup unsalted butter, room temperature
06 - 2 cups granulated sugar
07 - 4 large eggs, room temperature
08 - 1 tablespoon vanilla extract
09 - 1.25 cups whole milk, room temperature

→ Buttercream

10 - 1.5 cups unsalted butter, room temperature
11 - 6 cups powdered sugar, sifted
12 - 0.25 cup whole milk
13 - 2 teaspoons vanilla extract
14 - Gel food coloring in assorted colors

# How to Make:

01 - Preheat oven to 350°F. Grease a 12x18-inch sheet cake pan and line with parchment paper.
02 - In a medium bowl, whisk together flour, baking powder, baking soda, and salt until evenly distributed.
03 - In a large bowl, beat butter and sugar together until light and fluffy, approximately 3-4 minutes.
04 - Add eggs one at a time, beating well after each addition. Mix in vanilla extract.
05 - Alternately add flour mixture and milk to the creamed mixture, beginning and ending with flour. Mix until just combined.
06 - Pour batter into prepared pan and smooth the surface. Bake for 30-35 minutes until a toothpick inserted in the center emerges clean.
07 - Cool cake completely in the pan on a wire rack before proceeding with decoration.
08 - Beat butter until creamy. Gradually add powdered sugar, then milk and vanilla. Beat until smooth and fluffy, approximately 5 minutes.
09 - Divide buttercream into separate bowls. Tint portions with gel food coloring for roses (red, pink, yellow), leaves (green), and reserve white for base layer.
10 - Spread a thin layer of white buttercream over the cooled cake for a smooth foundation.
11 - Fit piping bags with petal tips for roses and leaf tips for foliage. Pipe decorative roses and leaves across the cake, emphasizing corners and borders.
12 - Using a small round piping tip, write a congratulatory message or personalized graduation greeting on the cake.

# Expert Tips:

01 -
  • The buttercream is silky enough to pipe delicate roses but sturdy enough that they hold their shape without cracking or melting.
  • A full sheet feeds a crowd without requiring you to bake multiple layers, which means less stress and more time to practice your piping skills.
  • The vanilla cake stays genuinely moist for days, so you can bake it ahead and decorate the morning of your event.
02 -
  • Piping roses takes practice, and your first attempts might look wonky—but that's actually part of the charm, and by the third or fourth rose, your hand learns the motion and they start looking polished.
  • If your buttercream is too warm, it will be impossible to pipe; chill the bags in the refrigerator for 15 minutes between piping sessions if needed.
  • Gel food coloring is genuinely worth the extra few dollars because liquid coloring will water down your buttercream and ruin the texture you worked so hard to create.
03 -
  • Room temperature for the butter, eggs, and milk is genuinely critical and not something to skip—cold ingredients refuse to emulsify properly and you'll end up with a dense, grainy cake no matter how much you beat it.
  • Stop mixing the batter the moment you don't see streaks of flour anymore, because even an extra 10 seconds of overmixing develops gluten and creates a tough crumb that fights against the tender texture you're aiming for.
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