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Graduation Sheet Cake Buttercream Roses

Featured in: One-Bowl Desserts

This sheet cake is crafted for graduation festivities, adorned with soft buttercream roses and an edible diploma scroll. The tender cake base is easy to make, blending classic ingredients like flour, sugar, eggs, and butter. After cooling, the cake is frosted with a creamy buttercream, tinted in vibrant hues for piping detailed floral decorations. Fondant or chocolate creates the diploma, finished with edible pearls for extra sparkle. Customize colors for school spirit and enjoy with a crowd—this dessert celebrates academic milestones in style.

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Updated on Sun, 15 Mar 2026 14:04:00 GMT
A festive sheet cake decorated with buttercream roses and an edible diploma, perfect for graduation celebrations. Pin it
A festive sheet cake decorated with buttercream roses and an edible diploma, perfect for graduation celebrations. | weeknightwhisk.com

Ingredients

  • Sifting gives the cake an especially tender crumb, so don't skip this step.
  • Cream the sugar with butter until it almost looks mousse-like for that light structure.
  • Using room temperature butter ensures a smooth batter and a soft cake.
  • Room temperature milk blends easily and reduces the chance that your batter curdles.
  • Crack them in a separate bowl to avoid shells sneaking in on rush days.
  • This adds warmth and depth; be generous if you like.
  • Measure carefully for maximum lift—too much can make the cake taste metallic.
  • Just enough salt balances sweetness and enhances flavor.
  • Sifting prevents lumps in your buttercream and keeps it silky.
  • Gel colors produce vibrant hues without messing up buttercream texture.
  • These make every slice feel like a celebration and are surprisingly easy to sprinkle evenly.
  • Either works for crafting the diploma; fondant rolls easily, but white chocolate feels like a treat.

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Instructions

Vibrant buttercream roses and a fondant diploma adorn this crowd-pleasing sheet cake, ideal for honoring graduates. Pin it
Vibrant buttercream roses and a fondant diploma adorn this crowd-pleasing sheet cake, ideal for honoring graduates. | weeknightwhisk.com

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Decorating with School Spirit

Making Diplomas That Actually Look Cute

Helping Hands and Cake Slices

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Celebrate with a decorated sheet cake featuring buttercream roses and an edible diploma, making every graduate feel special. Pin it
Celebrate with a decorated sheet cake featuring buttercream roses and an edible diploma, making every graduate feel special. | weeknightwhisk.com

Common Questions

→ How do I achieve vibrant buttercream colors?

Use gel food coloring to avoid watery consistency and ensure vivid results in your frosting.

→ Can the cake be customized for different schools?

Yes, tint buttercream and decorations in school colors for a personalized touch to honor your graduate.

→ What tools are needed for floral decorations?

Piping bags and rose and leaf tips make it easy to craft roses and leaves atop the cake.

→ Is it possible to make a chocolate version?

Substitute ¾ cup of the flour with cocoa powder for a rich chocolate cake variation.

→ How should edible diplomas be prepared?

Shape fondant or white chocolate into scrolls, then use colored fondant ribbon for an authentic look.

→ What allergens are present?

This dessert contains wheat, eggs, and dairy. Always confirm decorations and food colorings for added allergens.

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Graduation Sheet Cake Buttercream Roses

Festive sheet cake topped with buttercream roses and diploma scroll, perfect for graduation celebrations.

Prep Time
40 min
Cook Time
30 min
Time Needed
70 min
Created by Ella Thompson

Dish Type One-Bowl Desserts

Skill Level Medium

Cuisine American

Makes 24 Portions

Dietary Info Meat-Free

What You'll 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

01 2 cups unsalted butter, softened
02 8 cups powdered sugar, sifted
03 ½ cup whole milk or heavy cream
04 2 teaspoons vanilla extract
05 Food coloring (gel preferred), as needed for roses, leaves, and diploma

Decorations

01 Edible gold or silver pearls (optional, for accents)
02 Fondant or white chocolate for diploma and ribbon (optional)

Step-by-Step

Step 01

Prepare Sheet Cake Pan: Preheat oven to 350°F. Grease and line a 12x18-inch sheet cake pan with parchment paper.

Step 02

Mix Butter and Sugar: Combine butter and sugar in a large bowl and beat with an electric mixer until light and fluffy, approximately 3 minutes.

Step 03

Incorporate Eggs and Vanilla: Add eggs one at a time, ensuring each is fully blended before adding the next. Stir in vanilla extract.

Step 04

Combine Dry Ingredients: In a separate bowl, whisk together flour, baking powder, and salt.

Step 05

Integrate Wet and Dry Ingredients: Add dry mixture to wet mixture in three portions, alternating with milk, starting and ending with the flour mixture. Mix until just combined.

Step 06

Transfer and Smooth Batter: Pour batter into prepared pan and level the surface with an offset spatula.

Step 07

Bake: Bake for 28 to 32 minutes or until a toothpick inserted in the center emerges clean.

Step 08

Cool Cake: Allow cake to cool in the pan for 10 minutes. Remove from pan and set on a cooling rack to cool completely.

Step 09

Prepare Buttercream Frosting: Beat butter until creamy. Gradually incorporate powdered sugar, vanilla, and milk, mixing until the texture is light and fluffy. Adjust milk or powdered sugar for desired consistency.

Step 10

Tint Buttercream: Divide buttercream into bowls. Tint portions pink, red, or yellow for roses, green for leaves, and leave remaining white for the cake coating.

Step 11

Frost Cake: Spread a smooth, even layer of white buttercream over the completely cooled cake.

Step 12

Pipe Roses and Leaves: Using piping bags fitted with a rose tip, pipe buttercream roses in chosen colors. Use a leaf tip to add green leaves.

Step 13

Create Diploma Accent: Shape a small amount of fondant or white chocolate into a scroll and tie with a colored fondant ribbon. Place the diploma accent on the cake.

Step 14

Add Edible Decorations: Embellish with edible pearls and any additional desired accents.

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Tools Required

  • 12x18-inch sheet cake pan
  • Electric mixer
  • Mixing bowls
  • Parchment paper
  • Cooling rack
  • Offset spatula
  • Piping bags
  • Piping tips (rose, leaf, round)
  • Fondant tools (optional)

Allergy Notice

Go through every ingredient to identify allergens and talk to your healthcare provider if you have concerns.
  • Contains wheat (gluten), eggs, and milk (dairy). Decorations and food coloring may contain additional allergens—review all labels carefully.

Nutrition Information (per portion)

Nutrition details are for general reference and shouldn't replace advice from your doctor.
  • Caloric Content: 430
  • Fats: 20 g
  • Carbohydrates: 59 g
  • Proteins: 4 g

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