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High School Graduation Sheet Cake

Featured in: Sweet Baking Breaks

Celebrate graduation in style with a moist vanilla sheet cake, prepared in a large sheet pan and adorned with creamy buttercream. The cake features festive Class of 2026 piping in school colors, adding a personal touch to your party table. Mixing and baking is straightforward, while decorating provides space for creativity. The cake serves 24 and pairs beautifully with sparkling beverages. Ideal for graduation events, it stays fresh for days and offers versatility in flavor or decoration. Allergen caution: contains wheat, eggs, and dairy.

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Updated on Sat, 28 Mar 2026 00:31:51 GMT
Festive vanilla sheet cake decorated with creamy buttercream and Class of 2026 piping for graduation celebrations. Pin it
Festive vanilla sheet cake decorated with creamy buttercream and Class of 2026 piping for graduation celebrations. | taddutsignal.com

Ingredients

  • I sift mine for a lighter crumb and always measure by spooning and leveling—no packing!
  • Freshness matters; a flat cake taught me to check the expiry before mixing.
  • Just a little sharpens the sweet, making the vanilla stand out.
  • Room temperature butter whips up smooth, but don't let it go too soft or the structure suffers.
  • Mixing for several minutes gives the cake a delicate texture and even flavor.
  • Room temp eggs blend best; cold eggs gave me streaks once, so now I set them out ahead.
  • A whole tablespoon adds depth—more than usual, but it's what elevates party cakes.
  • It keeps cake moist and helps everything come together gently.
  • Sifting prevents lumps in buttercream—worth the extra step for smooth piping.
  • Gel colors stay bold and don't change buttercream consistency; liquid ones sometimes run.
  • Optional but always make the cake look and feel festive, especially for a graduation.

Instructions

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| taddutsignal.com

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How to Nail the Piping Details

Keeping the Cake Moist and Fluffy

Sheet Cake Party Success Tricks

Moist vanilla sheet cake with smooth buttercream frosting and Class of 2026 piping, perfect for graduation parties. Pin it
Moist vanilla sheet cake with smooth buttercream frosting and Class of 2026 piping, perfect for graduation parties. | taddutsignal.com

Common Questions

→ How do I achieve vibrant school colors in the frosting?

Use gel food coloring to tint the buttercream without thinning it, ensuring vivid hues for piping and borders.

→ Can I make the cake ahead of time?

Yes, prepare and decorate the cake up to one day early. Store covered in the refrigerator for freshness.

→ What's the best way to pipe 'Class of 2026'?

Use a piping bag fitted with a writing tip for letters and a star tip for borders. Practice piping on parchment before decorating.

→ How can I add extra decorations?

Sprinkles, edible glitter, or colored sugar add flair. Simply scatter them on top after piping for extra festivity.

→ Can I make a chocolate version of this cake?

Substitute half a cup of flour with unsweetened cocoa powder to turn the vanilla sheet cake into a chocolate one.

→ What are the key allergens in this cake?

The cake contains wheat, eggs, and dairy. Check food coloring and decorations for hidden allergens.

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High School Graduation Sheet Cake

Vanilla sheet cake topped with buttercream piping, festive Class of 2026 details, ideal for graduation celebrations.

Prep Time
30 min
Cook Time
35 min
Overall Time
65 min
Created by Cassandra Lee


Level Medium

Cuisine American

Serves 24 Portions

Diet Details Meat-Free

What You Need

Sheet Cake Base

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 in school colors and black

Decoration

01 Sprinkles, edible glitter, or colored sugar as desired

How To Make It

Step 01

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

Step 02

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

Step 03

Cream Butter and Sugar: In a large mixing bowl, beat unsalted butter and granulated sugar until light and fluffy, about 3 to 4 minutes with an electric mixer.

Step 04

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

Step 05

Combine Wet and Dry Ingredients: Add the dry mixture in three additions, alternating with whole milk. Begin and finish with dry ingredients. Mix until just combined; avoid overmixing.

Step 06

Transfer Batter: Pour batter into the prepared pan and smooth the top using an offset spatula.

Step 07

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

Step 08

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

Step 09

Prepare Frosting: Beat unsalted butter on medium speed until creamy. Gradually add powdered sugar, mixing thoroughly. Incorporate vanilla extract and adjust texture with milk or heavy cream until smooth.

Step 10

Color and Divide Frosting: Separate frosting portions and tint with food coloring for base, borders, and piping as needed.

Step 11

Decorate Cake: Spread a smooth layer of buttercream over the cooled cake. Use piping tips to create borders and write 'Class of 2026'. Apply sprinkles or edible decorations as desired.

Step 12

Set Frosting: Refrigerate cake for 30 minutes to firm the frosting before serving.

Gear Needed

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

Allergy Warnings

Always check ingredients for allergens and ask a healthcare expert if you have concerns.
  • Contains wheat (gluten), eggs, and milk (dairy). Check decorations and food coloring for additional allergens.

Nutrition Information (per portion)

Nutrition info is for guidance only and doesn't substitute advice from a professional.
  • Caloric Value: 410
  • Fats: 18 g
  • Carbohydrates: 60 g
  • Proteins: 3 g

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