Simple Vanilla Sheet Cake (Printable)

Moist vanilla sheet cake with creamy buttercream and colorful floral decoration.

# What Goes In:

→ For the Sheet Cake

01 - 2 ½ cups all-purpose flour
02 - 2 ½ teaspoons baking powder
03 - ½ teaspoon salt
04 - 1 cup unsalted butter, softened
05 - 2 cups granulated sugar
06 - 4 large eggs, room temperature
07 - 1 tablespoon pure vanilla extract
08 - 1 cup whole milk, room temperature

→ For the Buttercream

09 - 1 ½ cups unsalted butter, softened
10 - 6 cups powdered sugar, sifted
11 - ¼ cup whole milk
12 - 2 teaspoons pure vanilla extract
13 - Food coloring (pink, yellow, green, or as desired)

# How to Make It:

01 - Preheat oven to 350°F. Grease a 9x13-inch baking pan and line with parchment paper.
02 - In a medium bowl, whisk together flour, baking powder, and salt.
03 - In a large bowl, beat butter and sugar with an electric mixer until light and fluffy, approximately 3 minutes.
04 - Add eggs one at a time, mixing well after each addition. Mix in vanilla extract.
05 - Add flour mixture in three parts, alternating with milk, beginning and ending with flour. Mix until just combined; do not overmix.
06 - Pour batter into prepared pan. Smooth the top with a spatula.
07 - Bake for 28 to 32 minutes, or until a toothpick inserted in the center comes out clean.
08 - Let cake cool in pan for 10 minutes, then turn out onto a wire rack to cool completely.
09 - Beat butter until creamy. Gradually add powdered sugar, alternating with milk, beating until smooth and fluffy. Mix in vanilla.
10 - Divide buttercream into bowls and tint portions with food coloring for flowers and leaves.
11 - Spread a generous layer of plain buttercream over cooled cake.
12 - Fill piping bags fitted with flower and leaf tips with colored buttercream. Pipe flowers and leaves decoratively across the cake, focusing on corners or along the edges for a classic appearance.
13 - Optionally, pipe a cross or add First Communion text with a small round tip.

# Expert Advice:

01 -
  • The cake stays impossibly moist for days, so you can actually bake it ahead without stress.
  • Buttercream piping sounds intimidating until you realize the flowers don't need to look like a fancy bakery—they just need to feel thoughtful.
  • Twenty servings means you're feeding a crowd without spending your whole day in the kitchen.
02 -
  • Room temperature ingredients aren't optional—they're the difference between smooth, emulsified batter and separated, grainy batter that bakes unevenly.
  • Not overmixing the batter after you add the flour is genuinely crucial; mix just until the streaks of flour disappear, then stop immediately.
  • Piping flowers takes maybe ten minutes of total practice before you stop second-guessing yourself, so don't psych yourself out before you begin.
03 -
  • Add ½ teaspoon of almond extract to the batter if you want to deepen the flavor without making it obviously different—it's a whisper, not a shout.
  • Gel food coloring is your secret weapon: it won't thin the buttercream and you can get truly vibrant colors with just a toothpick's worth.
  • If your piping bag gets tired, switch to a fresh one—holding steady tension on a bag is harder than it looks, and a fresh start resets your focus.
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