Almond Cake

INGREDIENTS

• 1 1/4 cups confectioners' sugar, plus more for dusting
• 1/2 cup cake flour
• 2 eggs
• 1 stick (4 ounces) unsalted butter, softened
• 1/2 cup fine yellow cornmeal
• 1/4 cup sour cream
• 1/2 teaspoon pure vanilla extract
• 1/4 cup almond paste, cut into half-inch pieces
• 4 egg yolks
• 1 teaspoon baking powder