Simple Vanilla Sheet Cake (Print Version)

Moist vanilla sheet cake with smooth buttercream and delicate floral decorations, ideal for special occasions.

# Components:

→ Sheet Cake

01 - 2.5 cups all-purpose flour
02 - 2.5 teaspoons baking powder
03 - 0.5 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

→ Buttercream Frosting

09 - 1.5 cups unsalted butter, softened
10 - 6 cups powdered sugar, sifted
11 - 0.25 cup whole milk
12 - 2 teaspoons pure vanilla extract
13 - Food coloring as desired

# Preparation Steps:

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 without overmixing.
06 - Pour batter into prepared pan and 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 extract.
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 as the base layer.
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 bake it ahead without any stress about timing.
  • Buttercream flowers look showstopping but don't require years of pastry training—just a steady hand and a little patience.
  • It's versatile enough to adapt to any celebration, not just First Communions, with food coloring swaps and personal touches.
02 -
  • Room temperature ingredients aren't a suggestion; cold eggs and milk will break the emulsion and you'll end up with a lumpy, separated batter that bakes up dense.
  • Overmixing after you add the flour develops gluten and toughens the crumb, so mix just until combined even if it doesn't look perfectly smooth.
  • Gel food coloring is your secret weapon for vibrant, non-runny buttercream that pipes beautifully without compromising texture.
03 -
  • Keep a small bowl of warm water nearby while piping to dip your decorating tips into between flowers; this keeps the buttercream from dragging and tearing as you pipe.
  • If your buttercream is too soft and won't hold its shape, pop it in the refrigerator for ten minutes to firm up slightly, then return to piping.
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