Graduation Sheet Cake Buttercream Roses (Printable)

Colorful sheet cake topped with buttercream roses and diploma to celebrate graduates in style.

# What You Need:

→ Cake

01 - 3 cups all-purpose flour
02 - 2 ½ cups granulated sugar
03 - 1 cup unsalted butter, softened
04 - 1 cup whole milk, room temperature
05 - 6 large eggs, room temperature
06 - 1 tablespoon vanilla extract
07 - 2 ½ teaspoons baking powder
08 - ½ teaspoon salt

→ Buttercream Frosting

09 - 2 cups unsalted butter, softened
10 - 8 cups powdered sugar, sifted
11 - ½ cup whole milk or heavy cream
12 - 2 teaspoons vanilla extract
13 - Food coloring (gel preferred), as needed for roses, leaves, and diploma

→ Decorations

14 - Edible gold or silver pearls (optional, for accents)
15 - Fondant or white chocolate for diploma and ribbon (optional)

# Directions:

01 - Preheat oven to 350°F. Grease and line a 12x18-inch sheet cake pan with parchment paper.
02 - In a large bowl, beat unsalted butter and granulated sugar until light and fluffy, about 3 minutes.
03 - Add eggs one at a time, mixing well after each addition. Stir in vanilla extract.
04 - In a separate bowl, whisk together all-purpose flour, baking powder, and salt.
05 - Add dry mixture to the butter mixture in three additions, alternating with milk. Start and finish with the flour mixture. Mix until just blended.
06 - Pour the batter into the prepared pan and smooth the surface. Bake for 28 to 32 minutes, or until a toothpick inserted in the center comes out clean.
07 - Allow cake to cool in the pan for 10 minutes. Remove from pan and place on a wire rack to cool completely.
08 - Beat unsalted butter until creamy. Gradually incorporate powdered sugar, vanilla extract, and milk, mixing until the frosting is fluffy. Adjust with additional milk or sugar as needed for desired consistency.
09 - Separate buttercream into bowls. Tint portions pink, red, or yellow for roses, green for leaves, and reserve some white for the main cake coating.
10 - Cover the cooled cake with an even layer of white buttercream using an offset spatula.
11 - Using a piping bag with a rose tip, pipe buttercream roses in desired colors. Pipe green leaves with a leaf tip.
12 - Shape fondant or white chocolate into a scroll for the diploma. Tie with colored fondant ribbon and place atop the cake.
13 - Adorn with edible pearls and other decorative elements as desired.

# Expert Hints:

01 -
  • The buttercream roses are easier than they look and will fool everyone into thinking you’re a pro decorator.
  • Even after hours of celebration, the cake stays tender and moist—meaning leftovers are as good as the first slice.
02 -
  • Trying to frost before the cake is completely cool will leave you with a melted mess—trust me, I learned the sticky way.
  • Switching from liquid to gel food coloring kept my roses crisp and vibrant instead of runny.
03 -
  • Warm your hands before working with fondant or chocolate; it keeps the diploma shape smooth and crack-free.
  • Use a rose nail to practice buttercream flowers—the little extra step gives you confidence for the big cake.
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