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High School Graduation Sheet Cake

Featured in: Sweet Kitchen Treats

This festive vanilla sheet cake is crafted for graduation parties, featuring a light, moist crumb and creamy buttercream frosting. Vibrant food coloring lets you personalize the decoration in school colors, and piped 'Class of 2026' adds a celebratory touch. Preparation and decorating allow plenty of creativity, while the cake remains easy to slice for large gatherings. Use gel coloring for bold results and star tips for elegant borders. Enjoy with sparkling lemonade or fruit punch for a memorable occasion.

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Updated on Tue, 24 Mar 2026 01:56:07 GMT
Festive vanilla sheet cake with creamy buttercream and Class of 2026 piping for graduation celebrations. Pin it
Festive vanilla sheet cake with creamy buttercream and Class of 2026 piping for graduation celebrations. | cozyzeitoun.com

Ingredients

  • This forms the sturdy base of the sheet cake, and I learned early on that sifting leads to a lighter crumb.
  • Ensures the whole cake rises evenly across the big pan, so no one gets a flat piece.
  • Balances sweetness; I never skip it even in dessert recipes.
  • Provides richness—using room temperature makes it blend smoother for both cake and frosting.
  • Helps keep the cake moist and adds sweetness without overpowering.
  • Room temperature eggs mean a fluffier batter, something I learned after a few dense cakes.
  • A splash deepens flavor in both the cake and the frosting.
  • Keeps the crumb tender; don’t substitute with skim or the cake might turn out dry.
  • Sifting ensures lump-free buttercream that’s super smooth.
  • Adjust the consistency for piping or spreading—cream gives extra richness.
  • Gel types deliver vivid hues for school colors without making the icing runny.
  • These optional decorations add playful texture and sparkle, especially for festive occasions.

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Instructions

Moist vanilla sheet cake decorated with colorful buttercream and Class of 2026 piping—perfect for graduation parties. Pin it
Moist vanilla sheet cake decorated with colorful buttercream and Class of 2026 piping—perfect for graduation parties. | cozyzeitoun.com

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Celebratory sheet cake with buttercream frosting and Class of 2026 piping, ideal for high school graduation festivities. Pin it
Celebratory sheet cake with buttercream frosting and Class of 2026 piping, ideal for high school graduation festivities. | cozyzeitoun.com

Recipe FAQs

→ How do I achieve vibrant frosting colors?

Use gel food coloring, which provides rich hues without thinning the buttercream. Mix small amounts at a time to reach desired shades.

→ Can I make the cake ahead of time?

Yes, bake and frost the cake up to one day in advance. Keep it covered in the refrigerator to maintain freshness and prevent drying out.

→ How should leftovers be stored?

Store covered slices in the refrigerator for up to four days. Allow cake to come to room temperature before serving for best texture.

→ Are there chocolate variations available?

For a chocolate option, substitute half a cup of flour with unsweetened cocoa powder. Adjust sugar amount if desired for richer flavor.

→ What piping tips are best for decoration?

Use writing tips for lettering and star tips for borders. Fill piping bags with colored buttercream for distinct details and celebrate the occasion.

→ What allergen information should be considered?

This cake contains wheat, eggs, and dairy. Confirm that food coloring and decorations are safe for guests by checking ingredient labels.

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High School Graduation Sheet Cake

Moist vanilla cake decorated with creamy buttercream and Class of 2026 piping for graduation festivities.

Prep time
30 mins
Time to cook
35 mins
Total duration
65 mins
Created by Julian Park


Level Medium

Cuisine American

Makes 24 Portions

Dietary notes Meatless

What You'll Need

Sheet 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, room temperature
05 2 cups granulated sugar
06 4 large eggs, room temperature
07 1 tablespoon vanilla extract
08 1 cup whole milk, room temperature

Buttercream Frosting

01 1 1/2 cups unsalted butter, room temperature
02 6 cups powdered sugar, sifted
03 2 teaspoons vanilla extract
04 4 to 6 tablespoons milk or heavy cream
05 Food coloring (school colors and black for piping, as desired)

Decoration

01 Sprinkles, edible glitter, or colored sugar (optional)

Cooking Steps

Step 01

Prepare the Pan: Preheat oven to 350°F. Grease and line a 13x18-inch sheet pan with parchment paper.

Step 02

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

Step 03

Cream Butter and Sugar: In a large bowl, beat butter and sugar until light and fluffy, approximately 3 to 4 minutes.

Step 04

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

Step 05

Combine Wet and Dry Mixtures: Add the dry ingredients to the wet mixture in three parts, alternating with the milk, beginning and ending with the dry ingredients. Mix until just combined.

Step 06

Transfer Batter: Pour the batter into the prepared sheet pan, smoothing the surface evenly.

Step 07

Bake: Bake for 30 to 35 minutes, or until a toothpick inserted in the center emerges clean.

Step 08

Cool: Allow the cake to cool completely in the pan on a wire rack.

Step 09

Make Buttercream Frosting: Beat butter on medium speed until creamy, about 2 minutes. Gradually add powdered sugar, beating well. Blend in vanilla and sufficient milk or cream to reach desired consistency.

Step 10

Color and Prepare Frosting: Divide buttercream and tint portions for the base, borders, and Class of 2026 piping as desired.

Step 11

Decorate: Spread a smooth layer of buttercream over the cooled cake. Pipe decorative borders and the Class of 2026 inscription using a piping bag with writing and star tips. Add sprinkles or edible decorations as desired.

Step 12

Chill to Set: Refrigerate cake for 30 minutes prior to serving to set the frosting.

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Equipment list

  • 13x18-inch sheet pan
  • Parchment paper
  • Electric mixer
  • Mixing bowls
  • Measuring cups and spoons
  • Offset spatula
  • Piping bags and tips (round and star)
  • Wire rack

Allergy info

Always check every component for allergens. Speak to your healthcare provider if unsure.
  • Contains wheat (gluten), eggs, and milk (dairy). Check labels on food coloring and decorations for hidden allergens.

Nutrition details per portion

Nutrition info is for reference only and isn't medical guidance.
  • Energy: 410
  • Fat content: 18 g
  • Carbohydrates: 60 g
  • Proteins: 3 g

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