Graduation Sheet Cake Buttercream Roses

Featured in: Sweet Everyday Bakes

Mark graduations with a delightful sheet cake, featuring soft, vanilla-scented layers and silky buttercream frosting. The cake is generously decorated with hand-piped buttercream roses in vibrant hues and finished with an edible diploma for a playful, memorable touch. The large, moist cake base provides plenty of servings, making it perfect for sharing at celebrations. Custom accents like school colors and edible pearls can be added for personal flair. Simple steps and clear instructions make assembly and decoration approachable, yielding an impressive center­piece for milestone events.

Updated on Tue, 17 Mar 2026 10:12:41 GMT
Festive sheet cake decorated with buttercream roses and an edible diploma for graduation celebrations.  Save to Pinterest
Festive sheet cake decorated with buttercream roses and an edible diploma for graduation celebrations. | simplelouz.com

Celebrate your graduate in style with this delightful Graduation Sheet Cake adorned with luscious buttercream roses and an edible diploma scroll. This festive sheet cake not only pleases a crowd but also serves as a beautiful centerpiece for any graduation party, blending classic flavors with elegant decoration.

Festive sheet cake decorated with buttercream roses and an edible diploma for graduation celebrations.  Save to Pinterest
Festive sheet cake decorated with buttercream roses and an edible diploma for graduation celebrations. | simplelouz.com

This classic American dessert begins with a moist and tender sheet cake base flavored gently with vanilla, layered and decorated with rich, creamy buttercream. The combination of colors from the gel food coloring brings vibrancy to the roses and leaves, while the fondant diploma adds a charming thematic detail to honor the graduate.

Ingredients

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  • Cake
    3 cups (375 g) all-purpose flour
    2 ½ cups (500 g) granulated sugar
    1 cup (225 g) unsalted butter, softened
    1 cup (240 ml) whole milk, room temperature
    6 large eggs, room temperature
    1 tablespoon vanilla extract
    2 ½ teaspoons baking powder
    ½ teaspoon salt
  • Buttercream Frosting
    2 cups (450 g) unsalted butter, softened
    8 cups (1 kg) powdered sugar, sifted
    ½ cup (120 ml) whole milk or heavy cream
    2 teaspoons vanilla extract
    Food coloring (gel preferred), as needed for roses, leaves, and diploma
  • Decorations
    Edible gold or silver pearls (optional, for accents)
    Fondant or white chocolate for diploma and ribbon (optional)

Instructions

1. Preheat Oven
Preheat the oven to 350°F (175°C). Grease and line a 12x18-inch sheet cake pan with parchment paper.
2. Cream Butter and Sugar
In a large bowl, beat butter and sugar until light and fluffy, about 3 minutes.
3. Add Eggs and Vanilla
Add eggs one at a time, mixing well after each addition. Stir in vanilla extract.
4. Combine Dry Ingredients
In a separate bowl, whisk together flour, baking powder, and salt.
5. Mix Batter
Add flour mixture to the butter mixture in three additions, alternating with milk. Begin and end with the flour mixture. Mix until just combined.
6. Prepare to Bake
Pour batter into the prepared pan and smooth the top.
7. Bake Cake
Bake for 28–32 minutes, or until a toothpick inserted in the center comes out clean.
8. Cool Cake
Cool in the pan for 10 minutes, then turn out onto a wire rack to cool completely.
9. Prepare Frosting
For the frosting, beat butter until creamy. Gradually add powdered sugar, vanilla, and milk, mixing until fluffy. Adjust consistency with more milk or sugar as needed.
10. Color Buttercream
Divide buttercream into bowls for coloring. Tint portions pink, red, or yellow for roses, green for leaves, and leave some white for the main cake coating.
11. Frost Cake
Frost the cooled cake with a smooth layer of white buttercream.
12. Pipe Roses and Leaves
Using a piping bag fitted with a rose tip, pipe buttercream roses in desired colors. Pipe green leaves with a leaf tip.
13. Make Diploma Decoration
For the diploma, shape a small piece of fondant or white chocolate into a scroll, tie with a ribbon of colored fondant, and place on the cake.
14. Add Accents
Add edible pearls and any additional accents as desired.

Zusatztipps für die Zubereitung

Die Verwendung von Gel-Farbpaste gewährleistet lebendige, nicht wässrige Farben für die Buttercreme. Um eine gleichmäßige Konsistenz zu erzielen, sollten Sie Butter und Eier vor der Verarbeitung auf Raumtemperatur bringen. Beim Verzieren ist eine ruhige Hand und ein stabiler Untergrund hilfreich, insbesondere beim Formen der Rosen und Blätter.

Varianten und Anpassungen

Für Schokoladenliebhaber kann ¾ Tasse (75 g) des Mehls durch ungesüßtes Kakaopulver ersetzt werden. Passen Sie die Kristallzucker-Menge eventuell leicht an. Um den Kuchen persönlicher zu gestalten, wählen Sie Lebensmittelfarben passend zu den Schulfarben des Absolventen. Fondant oder weiße Schokolade können für das Diplom und die Dekorationsbänder variieren.

Serviervorschläge

Dieser Kuchen eignet sich hervorragend als Highlight auf dem Dessertbuffet bei Abschlussfeiern. Servieren Sie ihn mit frischem Obst oder einer Kugel Vanilleeis für eine extravagante Note. Auch eine passende Tasse Kaffee oder Tee unterstreicht den festlichen Genuss.

Elegant buttercream roses and fondant diploma adorn this celebratory sheet cake for graduation parties.  Save to Pinterest
Elegant buttercream roses and fondant diploma adorn this celebratory sheet cake for graduation parties. | simplelouz.com

Mit diesem Graduation Sheet Cake mit Buttercreme-Rosen und einem essbaren Diplom gelingt Ihnen ein eindrucksvolles Meisterwerk, das sowohl optisch als auch geschmacklich begeistert. Begeistern Sie Ihre Gäste mit einem Kuchen, der die Errungenschaften eines jeden Absolventen gebührend feiert.

Recipe FAQs

What size pan should I use?

A 12x18-inch sheet cake pan is ideal for achieving even layers and serving a crowd.

How do I make buttercream roses?

Pipe colored buttercream using a rose tip, swirling to create petals. Practice on parchment before decorating the cake.

Can I personalize the cake colors?

Absolutely! Use gel food coloring to tint buttercream and fondant to match the graduate's school colors.

Is it possible to make the cake ahead?

You can bake the cake and prepare buttercream in advance. Assemble and decorate shortly before serving for freshness.

Are there alternatives for the diploma decoration?

Shape fondant, white chocolate, or even a thin piece of rolled cookie dough into a scroll for an edible diploma effect.

Is this dessert vegetarian-friendly?

Yes, the cake and buttercream use no meat or gelatin. Always check food colorings for animal-derived ingredients.

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Graduation Sheet Cake Buttercream Roses

Festive sheet cake adorned with buttercream roses and a diploma—ideal for graduation parties and joyful gatherings.

Prep Time
40 min
Cook Time
30 min
Overall Time
70 min
Created by Sienna Holland


Skill Level Medium

Cuisine American

Makes 24 Portions

Diet Preferences Vegetarian Option

What You'll Need

Cake

01 3 cups all-purpose flour
02 2 1/2 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 1/2 teaspoons baking powder
08 1/2 teaspoon salt

Buttercream Frosting

01 2 cups unsalted butter, softened
02 8 cups powdered sugar, sifted
03 1/2 cup whole milk or heavy cream
04 2 teaspoons vanilla extract
05 Gel food coloring, 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

How-To Steps

Step 01

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

Step 02

Combine Butter and Sugar: In a large mixing bowl, beat unsalted butter and granulated sugar with an electric mixer until light and fluffy, about 3 minutes.

Step 03

Incorporate Eggs and Vanilla: Add eggs one at a time, blending well after each addition. Stir in vanilla extract.

Step 04

Mix Dry Ingredients: In a separate bowl, whisk together all-purpose flour, baking powder, and salt.

Step 05

Combine Wet and Dry Mixtures: Gradually add the flour mixture to the butter mixture in three additions, alternating with whole milk. Begin and end with the flour mixture. Mix just until combined.

Step 06

Pan and Bake: Pour batter into the prepared pan and smooth the surface evenly.

Step 07

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

Step 08

Cool: Cool in the pan for 10 minutes, then remove and transfer to a wire rack to cool completely before decorating.

Step 09

Make Buttercream Frosting: In a mixing bowl, beat unsalted butter until creamy. Gradually add powdered sugar, vanilla, and milk or cream, mixing until smooth and fluffy. Adjust consistency with additional milk or powdered sugar as necessary.

Step 10

Tint Frosting: Portion buttercream into separate bowls. Tint with gel food coloring to create desired shades for roses, leaves, and diploma accents. Reserve some white for base coating.

Step 11

Frost Cake: Cover the entire cooled sheet cake with a smooth layer of white buttercream using an offset spatula.

Step 12

Pipe Buttercream Roses and Leaves: Using piping bags fitted with a rose tip, pipe buttercream roses in choice of colors. Pipe leaves with a leaf tip.

Step 13

Create and Place Diploma: Shape a diploma scroll from fondant or white chocolate and tie with a fondant ribbon. Position the diploma decoratively on the cake.

Step 14

Finish Decorations: Accent the cake with edible pearls and any additional decorative touches as desired.

Tools Needed

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

Allergy Advice

Review component list for allergens. When unsure, ask a healthcare expert.
  • Contains wheat (gluten), eggs, milk (dairy).
  • Edible decorations and food coloring ingredients may contain additional allergens—verify product labels as needed.

Nutrition Information (per serving)

Nutritional info from Simple Louz offers general insight, but please see your doctor for health matters.
  • Calorie Count: 430
  • Fats: 20 g
  • Carbohydrates: 59 g
  • Proteins: 4 g

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