Name: White Sheet Cake
Total time: PLACEHOLDER
Ingredients: 1 cup whole milk , room temperature; 6 large egg whites , room temperature; 1 teaspoon vanilla extract; 2¼ cups (9 ounces/255 grams) cake flour; 1¾ cups (12¼ ounces/347 grams) sugar; 4 teaspoons baking powder; 1 teaspoon salt; 12 tablespoons unsalted butter , cut into 12 pieces and softened; 3 cups Malted Milk Chocolate Buttercream

Why This Recipe Works

This white sheet cake is born from an already perfected layer cake recipe; we simply added all the batter to one pan and adjusted the baking time accordingly. The moist, fine crumb and hint of vanilla are the perfect base for just about any frosting you'd like to pair the cake with; we go with an interesting choice, an ultracreamy malted milk chocolate buttercream, which doesn't overpower the delicate cake like a heavier chocolate frosting might.

Before You Begin

If you want to take the cake out of the pan, grease the pan, line with parchment paper, grease the parchment, and then flour the pan. Top the cake with our Malted Milk Chocolate Buttercream or your favorite frosting recipe.

Instructions

Adjust oven rack to middle position and heat oven to 350 degrees. Grease and flour 13 by 9-inch baking pan. Whisk milk, egg whites, and vanilla together in bowl.

Using stand mixer fitted with paddle, mix flour, sugar, baking powder, and salt on low speed until combined. Add butter, 1 piece at a time, and mix until only pea-size pieces remain, about 1 minute. Add half of milk mixture, increase speed to medium-high, and beat until light and fluffy, about 1 minute. Reduce speed to medium-low, add remaining milk mixture, and beat until incorporated, about 30 seconds (batter may look curdled). Give batter final stir by hand.

Transfer batter to prepared pan and smooth top with rubber spatula. Gently tap pan on counter to settle batter. Bake until toothpick inserted in center comes out with few crumbs attached, 25 to 30 minutes, rotating pan halfway through baking.

Let cake cool completely in pan on wire rack, about 2 hours. Spread frosting evenly over top of cake. Serve.