Birthday Cake Recipe
Ingredients For the cake: 18 tablespoons (2 1/4 sticks) unsalted butter, at room temperature 3 cups sugar 6 extra-large eggs, at room temperature 8 ounces (about 1 cup) sour cream, at room temperature 1 1/2 teaspoons pure vanilla extract 1 lemon, zested 3 cups all-purpose flour 1/3 cup cornstarch 1 teaspoon kosher salt 1 teaspoon baking soda For the frosting: nocoupons 3/4 pound (3 sticks) unsalted butter, at room temperature...