What makes this sheet cake moist and tender?

Room temperature butter, whole milk, and careful mixing result in a soft, tender cake crumb.

Can I customize the frosting colors?

Absolutely! Use gel food coloring to match school colors or personalize the cake's decoration.

How do I achieve clean piping for Class of 2026?

Chill the frosting slightly, use dedicated piping tips, and pipe slowly for neat, steady lettering.

What pan size works best?

A 13x18-inch sheet pan ensures the proper thickness and even baking for the large celebratory cake.

How long can leftovers be stored?

Keep covered in the refrigerator for up to 4 days, maintaining freshness and flavor.

Can I substitute ingredients for dietary needs?

Yes, try plant-based milk or butter and check decorations for allergens if adapting for dietary preferences.

High School Graduation Sheet Cake

This festive vanilla sheet cake serves as a centerpiece for graduation celebrations, blending moist crumb with creamy buttercream. Decorate with school-colored frosting and Class of 2026 piping for a personalized touch. The cake yields 24 generous servings and comes together with simple pantry ingredients and vibrant food coloring. Use an offset spatula for even frosting and piping bags for decorative borders and lettering. Allow the cake to set in the refrigerator before serving. Pair with sparkling lemonade for a flavorful finish. Allergen information provided; leftovers stay fresh for several days when refrigerated.

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By Alexander Monroe

Updated on Mon, 16 Mar 2026 14:47:00 GMT

Festive vanilla sheet cake with creamy buttercream and Class of 2026 piping, perfect for graduation celebrations. | crunchydchicha.com

Ingredients

This forms the base—the secret is sifting and measuring carefully to avoid dense cake.
The lift you need for a soft, springy texture; double-check it’s fresh, or the cake might fall flat.
Just a touch sharpens every sweet note; mix it thoroughly with the dry ingredients.
Room temperature is key for creaming—if too cold, your batter won’t blend smoothly.
Adds sweetness and structure; beating well with butter makes the crumb light and airy.
Use room temperature so they blend seamlessly and create stability in the batter.
Generous dosing amplifies flavor and aroma—don’t skimp.
Room temperature prevents the batter from splitting; whisk it before pouring in.
Sifted for smooth buttercream—gritty icing is a no-go.
Creamy and rich, proper beating is what makes the frosting cloud-like.
Gel coloring stays vivid without thinning the buttercream—especially important for bold school colors.
Optional, but they bring the festive flair and excite the graduates.

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Getting the Color Just Right

Making the Lettering Stand Out

Serving and Storing Sheet Cake

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Moist vanilla sheet cake decorated with buttercream and Class of 2026 piping, ideal for graduation party desserts. | crunchydchicha.com

Recipe FAQs

→ What makes this sheet cake moist and tender?: Room temperature butter, whole milk, and careful mixing result in a soft, tender cake crumb.
→ Can I customize the frosting colors?: Absolutely! Use gel food coloring to match school colors or personalize the cake's decoration.
→ How do I achieve clean piping for Class of 2026?: Chill the frosting slightly, use dedicated piping tips, and pipe slowly for neat, steady lettering.
→ What pan size works best?: A 13x18-inch sheet pan ensures the proper thickness and even baking for the large celebratory cake.
→ How long can leftovers be stored?: Keep covered in the refrigerator for up to 4 days, maintaining freshness and flavor.
→ Can I substitute ingredients for dietary needs?: Yes, try plant-based milk or butter and check decorations for allergens if adapting for dietary preferences.

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High School Graduation Sheet Cake

A moist vanilla sheet cake topped with buttercream and Class of 2026 piping, ideal for graduation celebrations.

Prep Time

30 minutes

Time to Cook

35 minutes

Total Duration

65 minutes

Recipe by Alexander Monroe

Skill Level Medium

Cuisine American

Portions 24 Number of Servings

Dietary Info Meatless

Ingredient List

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)

How to Prepare

Step 01

Preparation and Pan Setup: Preheat oven to 350°F. Grease and line a 13x18-inch sheet pan with parchment paper for even removal.

Step 02

Dry Ingredient Mixture: Whisk flour, baking powder, and salt together in a medium bowl ensuring dry ingredients are aerated and well combined.

Step 03

Cream Butter and Sugar: In a large bowl, beat butter and sugar using an electric mixer on medium until light and fluffy, approximately 3–4 minutes.

Step 04

Incorporate Eggs and Vanilla: Add eggs individually, beating well after each. Blend in vanilla extract until fully integrated.

Step 05

Combine Mixtures: Add dry ingredients to wet mixture in three parts, alternating with milk and beginning and ending with dry ingredients. Mix gently until just incorporated.

Step 06

Transfer and Bake: Pour batter into prepared pan, smoothing the surface. Bake for 30–35 minutes or until a toothpick inserted in the center emerges clean.

Step 07

Cooling: Allow cake to cool completely in pan positioned on a wire rack to prevent condensation.

Step 08

Prepare Buttercream Frosting: Beat butter until creamy using electric mixer, then gradually incorporate powdered sugar. Add vanilla extract and milk or cream until frosting reaches preferred consistency.

Step 09

Color and Divide Frosting: Separate frosting into portions, tinting as needed with school colors and black for piping borders and inscription.

Step 10

Frost and Decorate: Apply a smooth layer of colored buttercream to cooled cake. Use piping bags with round and star tips to create borders and pipe 'Class of 2026.' Add sprinkles or edible decorations as desired.

Step 11

Setting Frosting: Refrigerate cake for 30 minutes before serving to allow frosting to firm up.

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What You'll Need

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 Details

Look closely at the ingredients for possible allergens. Speak with a healthcare provider if you're unsure.

Contains wheat (gluten), eggs, and milk (dairy).
Check ingredient labels for hidden allergens in food colorings and decorations.

Nutrition Info (per portion)

The nutrition info here is just for general reference. Always check with your medical professional if needed.

Calorie Count: 410
Fats: 18 g
Carbohydrates: 60 g
Proteins: 3 g

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