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Creamy Funfetti Sheet Cake Recipe with Easy Vanilla Buttercream Frosting

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A moist and tender funfetti sheet cake with a creamy vanilla buttercream frosting, perfect for celebrations and easy to make with pantry staples.

Ingredients

Scale
  • 2 ½ cups (315g) all-purpose flour, sifted
  • 2 ½ teaspoons (10g) baking powder
  • ½ teaspoon (3g) salt
  • 1 cup (227g) unsalted butter, softened
  • 1 ¾ cups (350g) granulated sugar
  • 4 large eggs, room temperature
  • 2 teaspoons (10ml) pure vanilla extract
  • 1 cup (240ml) warm whole milk
  • ¾ cup (130g) rainbow sprinkles (jimmies)
  • For the Vanilla Buttercream Frosting:
  • 1 cup (227g) unsalted butter, softened
  • 4 cups (480g) powdered sugar, sifted
  • 2–3 tablespoons (30-45ml) heavy cream
  • 1 ½ teaspoons (7ml) vanilla extract
  • Pinch of salt

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×13-inch sheet pan with butter or non-stick spray and lightly flour it.
  2. In a medium bowl, sift together flour, baking powder, and salt. Set aside.
  3. Using a mixer, beat softened butter and granulated sugar on medium speed until light and fluffy, about 3-4 minutes.
  4. Beat in eggs one at a time, fully incorporating each before adding the next. Mix in vanilla extract.
  5. On low speed, alternate adding dry ingredients and warm milk in three additions, starting and ending with dry ingredients. Mix just until combined.
  6. Gently fold in rainbow sprinkles using a rubber spatula, being careful not to overmix.
  7. Pour batter into prepared pan and spread evenly. Tap pan gently to release air bubbles.
  8. Bake for 30-35 minutes or until a toothpick inserted in the center comes out clean or with a few moist crumbs.
  9. Cool cake in pan for 15 minutes, then transfer to a wire rack to cool completely before frosting.
  10. For frosting, beat softened butter on medium speed until creamy, about 2 minutes.
  11. Gradually add sifted powdered sugar on low speed to avoid clouds, then add heavy cream, vanilla extract, and salt.
  12. Beat on high speed for 3 minutes until light and fluffy.
  13. Spread frosting evenly over cooled cake using an offset spatula or butter knife.
  14. If kitchen is warm, chill frosting for 10 minutes before spreading to prevent sliding.

Notes

Use softened butter that is not melting for best creaming results. Fold sprinkles gently to avoid color bleeding. Avoid overmixing after adding flour to keep cake tender. Use jimmies sprinkles instead of nonpareils to maintain color and crunch. Cool cake completely before frosting to prevent melting. Variations include chocolate funfetti, gluten-free, dairy-free, fruit-infused, and spiced versions.

Nutrition

Keywords: funfetti cake, sheet cake, vanilla buttercream, easy cake recipe, colorful cake, party cake, moist cake, homemade frosting

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