Martha's Meyer Lemon Anniversary Cake
You will need thirty-six cups (multiply following batter ingredients by 4 1/2) of batter to complete the entire cake. Batter Amounts and Baking Times for 2-Inch Deep Square Pans: Each 6-inch: 3 cups batter, 35 minutes baking time; each 8-inch: 5 cups batter, 45 minutes; each 10-inch: 10 cups batter, 70 minutes.
- 1 1/2 cups (3 sticks) unsalted butter, softened, plus more for pans
- 3 cups cake flour, (not self-rising), plus more for pans
- 2 1/4 teaspoons baking powder
- 2 1/4 cups sugar
- 4 large egg yolks
- 2 teaspoons Meyer lemon zest
- 3/4 cup whole milk
Preheat oven to 350 degrees. Butter cake pans. Line bottoms with parchment paper. Butter parchment, and dust with flour, tapping out excess; set aside. Sift together flour, baking powder, and 1/2 teaspoon salt into a medium bowl; set aside.
Put butter and 2 cups sugar into the bowl of an electric mixer fitted with the paddle attachment; mix on medium-high speed until pale and fluffy, about 5 minutes. Mix in egg yolks, 1 at a time, and zest. Reduce speed to low. Add flour mixture in 3 batches, alternating with milk. Transfer batter to a large bowl.
Put egg whites into the clean bowl of the electric mixer fitted with the whisk attachment; beat on medium-high speed until foamy. Add a pinch of salt; beat until soft peaks form. Gradually add remaining 1/4 cup sugar; beat until stiff peaks form.
Fold one-third of the egg-white mixture into batter with a rubber spatula. Gently fold in remaining egg-white mixture until just combined; do not overmix.
Divide batter among prepared pans. Bake until cake is golden and a cake tester inserted into center comes out clean. Transfer to a wire rack; let cool slightly, about 20 minutes. Invert onto rack. Remove parchment; reinvert. Let cool completely. Cakes can be refrigerated, wrapped in plastic, up to 1 day.