Lemon cake

 

Ingredients

• 1 cup (2 sticks) unsalted butter, room temperature, plus more for pans
• 2 1/2 cups all-purpose flour (spooned and leveled), plus more for pans
• 1/2 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1 teaspoon salt
• 1 tablespoon lemon zest
• 2 cups sugar
• 2 large eggs plus 3 large egg yolks
• 1/4 cup plus 2 tablespoons fresh lemon juice
• 1 cup low-fat buttermilk
• 1 lemon, thinly sliced and seeded
• Whipped Frosting

Variations

To make the recipe Martha prepared with John Barricelli on "The Martha Stewart Show," follow these instructions immediately before frosting the cake: Place one cake, bottom side up, on a cake stand. Tuck strips of parchment paper underneath. Using an offset-spatula or table knife, spread top with lemon curd. Top with remaining cake; continue frosting top and sides as directed.

Cook's Note

When making frosting, substitute 2 tablespoons fresh lemon juice for the vanilla extract.

Directions

1. Step 1

   Preheat oven to 350 degrees. Butter and flour two 8-by-2-inch cake pans, tapping out excess flour. In a medium bowl, whisk flour, baking powder, baking soda, salt, and lemon zest.

   In this step:

   • Buttering and Lining Cake Pans

2. Step 2

   In a large bowl, using an electric mixer, beat butter and 1 1/2 cups sugar until light and fluffy. With mixer on low, beat in eggs and yolks, one at a time. Beat in 2 tablespoons lemon juice. Alternately beat in flour mixture and buttermilk beginning and ending with flour mixture; mix just until combined.

   In this step:

   • How to Juice Citrus

3. Step 3

   Divide batter between pans; smooth tops. Bake until cakes pull away from sides of pans, 32 to 35 minutes. Let cool in pans 10 minutes. Run a knife around edges of pans and invert cakes onto a wire rack.

4. Step 4

   While cakes are baking, bring remaining 1/2 cup sugar and 1/2 cup water to a boil in a saucepan. Add lemon slices and simmer 25 minutes. Using a slotted spoon, transfer lemon slices to a waxed-paper-lined plate. Stir remaining 1/4 cup fresh lemon juice into syrup.

5. Step 5

   Using a toothpick, poke holes in warm cakes on rack. Brush with lemon syrup. Let cool completely. Prepare frosting, substituting 2 tablespoons fresh lemon juice for vanilla extract. Frost cooled cakes and top with candied lemon slices.