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Delicious Sheet Cake Recipe with Easy School Colors Frosting

delicious sheet cake with school colors frosting - featured image

A moist and tender sheet cake topped with vibrant, customizable school colors buttercream frosting. Perfect for school events, potlucks, and celebrations.

Ingredients

  • All-purpose flour – 2 ½ cups (315 g), sifted
  • Granulated sugar – 2 cups (400 g)
  • Baking powder – 2 ½ teaspoons
  • Baking soda – 1 teaspoon
  • Salt – ½ teaspoon
  • Unsalted butter – ½ cup (115 g), softened (for cake)
  • Whole milk – 1 cup (240 ml)
  • Vanilla extract – 2 teaspoons
  • Large eggs – 3, room temperature
  • Unsalted butter – 1 cup (230 g), softened (for frosting)
  • Powdered sugar – 4 cups (480 g), sifted
  • Vanilla extract – 1 teaspoon
  • Milk or cream – 2 to 3 tablespoons (30-45 ml)
  • Food coloring gels – in your school’s colors

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×13 inch sheet pan and line with parchment paper.
  2. In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
  3. In a separate bowl, cream ½ cup softened unsalted butter until smooth and fluffy.
  4. Beat in eggs one at a time, then stir in vanilla extract.
  5. Alternately add dry ingredients and milk to the butter and egg mixture, starting and ending with dry ingredients. Mix on low speed until smooth.
  6. Pour batter evenly into prepared pan and tap gently to release air bubbles.
  7. Bake for 35 to 40 minutes or until a toothpick inserted in the center comes out clean or with a few moist crumbs.
  8. Cool cake in pan for 15 minutes, then remove from pan and cool completely on a cooling rack.
  9. For frosting, beat 1 cup softened butter until creamy. Gradually add powdered sugar, beating well after each addition.
  10. Add vanilla extract and milk or cream to reach spreadable consistency. Divide and tint frosting with gel food coloring.
  11. Spread colored frostings on cooled cake in stripes, swirls, or patterns representing school colors.

Notes

Use room temperature butter and eggs for best batter texture. Sift powdered sugar and flour to avoid lumps. Use gel food coloring for vibrant frosting colors and chill colored frosting before spreading to prevent bleeding. Do not frost warm cake to avoid melting frosting.

Nutrition

Keywords: sheet cake, school colors frosting, buttercream frosting, easy cake recipe, party cake, potluck dessert, vanilla cake, colorful frosting