Dessert: White Sheet Cake

Try this recipe when making Ghoulish Petits Fours (pictured).

Ingredients

1 c. unsalted butter
2 tbsp. unsalted butter
4 1/2 c. sifted cake flour (not self-rising)
2 tbsp. baking powder
3/4 tsp. salt
1 1/2 c. milk
1 1/2 tbsp. pure vanilla extract
2 1/4 c. sugar
7 large egg whites

Instructions

Preheat oven to 350 degrees. Butter a 12-by-17-by-1-inch rimmed baking sheet. Line bottom with parchment paper. Butter parchment, and dust with flour, tapping off any excess. Set sheet aside.
Into a medium bowl, sift together flour, baking powder, and salt; set aside. In a measuring cup, combine milk and vanilla; set aside. In the bowl of an electric mixer fitted with the paddle attachment, cream butter until very smooth. With mixer on medium speed, add sugar in a slow, steady stream; beat until mixture is light and fluffy, about 3 minutes.
Reduce speed to low. Add reserved flour mixture in three batches, alternating with reserved milk mixture, and starting and ending with flour. Mix until just combined; do not overmix. Set aside.
In a clean bowl, beat egg whites until stiff but do not let dry peaks form. Fold one-third of the egg whites into batter to lighten, then gently fold in remaining whites in two batches.
Scrape batter into prepared sheet; smooth top with an offset spatula. Bake in oven until cake is springy to the touch and a cake tester inserted in the center comes out clean, about 30 minutes. Transfer to a wire rack, and let cool 15 minutes. Loosen sides of cake with a small metal spatula or paring knife; invert onto a buttered wire rack. Peel off parchment. To prevent splitting, reinvert cake so top is facing up. Let cake cool completely.

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