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Perfect Sheet Cake Recipe Easy School Colors Celebration Dessert Ideas

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A simple, moist sheet cake decorated with vibrant buttercream frosting in school colors, perfect for celebrations and game days. This easy recipe is forgiving and crowd-pleasing, making it a festive centerpiece.

Ingredients

Scale
  • 2 ½ cups (300 g) all-purpose flour, sifted
  • 2 cups (400 g) granulated sugar
  • 2 ½ teaspoons baking powder
  • ½ teaspoon baking soda
  • ½ teaspoon salt
  • ¾ cup (170 g) unsalted butter, softened
  • 3 large eggs, room temperature
  • 1 cup (240 ml) whole milk (or almond milk)
  • 2 teaspoons vanilla extract
  • For the Buttercream Frosting:
  • 1 cup (225 g) unsalted butter, softened
  • 4 cups (480 g) powdered sugar, sifted
  • 2–3 tablespoons (30–45 ml) heavy cream
  • 1 teaspoon vanilla extract
  • Gel food coloring in desired school colors

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×13-inch pan and line with parchment paper.
  2. In a large bowl, whisk together sifted flour, granulated sugar, baking powder, baking soda, and salt.
  3. In a separate bowl, beat softened butter with an electric mixer until smooth and creamy (2-3 minutes). Add eggs one at a time, mixing well after each.
  4. Gradually add dry ingredients alternated with milk to the butter and eggs mixture, starting and ending with dry ingredients. Mix on medium speed until just combined.
  5. Stir in vanilla extract gently.
  6. Pour batter into prepared pan and smooth the surface with a spatula.
  7. Bake for 30-35 minutes, checking doneness with a toothpick inserted in the center; it should come out clean or with a few moist crumbs.
  8. Cool cake completely on a rack before frosting.
  9. For frosting, beat softened butter until fluffy. Gradually add powdered sugar, then vanilla and 2 tablespoons heavy cream. Adjust consistency with more cream if needed.
  10. Divide frosting into bowls and tint each with gel food coloring to desired vibrancy.
  11. Frost cake in layers using an offset spatula, chilling for 10 minutes between colors to set each layer.
  12. After all colors are applied, chill cake for 20 minutes to firm frosting before slicing and serving at room temperature.

Notes

Do not overmix the batter to keep the cake moist and tender. Use gel food coloring for vibrant frosting without thinning it. Chill the cake between frosting layers to prevent colors from bleeding. An offset spatula helps achieve smooth, neat frosting layers. For vegan or gluten-free adaptations, substitute ingredients as noted in the recipe.

Nutrition

Keywords: sheet cake, school colors cake, celebration dessert, buttercream frosting, easy cake recipe, crowd-pleaser, game day dessert

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