Active Time

　　15 min

　　Total Time

　　1 1/2 hr (includes cooling)

　　

Ingredients

Makes 6 to 8 servings

　　1 3/4 cups all-purpose flour

　　1 1/2 teaspoons baking powder

　　Scant 1/2 teaspoon salt

　　1 1/2 sticks unsalted butter, softened

　　1 cup sugar

　　1 whole large egg plus 1 large egg yolk

　　1 1/2 teaspoons grated orange zest

　　1 1/2 teaspoons pure vanilla extract

　　3/4 cup whole milk

　　

Garnish:

Garnish: Confectioners sugar

　　

Step 1

Preheat oven to 375°F with rack in middle. Butter a 9-inch round cake pan, then line bottom with a round of parchment paper and butter parchment. Lightly dust with flour.

　　

Step 2

Whisk together flour (1 3/4 cups), baking powder, and salt.

　　

Step 3

Beat together butter and sugar with an electric mixer until pale and fluffy, about 5 minutes. Add whole egg, yolk, zest, and vanilla and beat 1 minute. At low speed, mix in flour mixture and milk alternately in batches.

　　

Step 4

Spread batter in cake pan and bake until golden brown and a wooden pick inserted in center comes out clean, 35 to 40 minutes. Cool cake in pan 10 minutes, then turn out onto a rack.