You’ll Need:Cake 2 1/3 cups all-purpose flour 1 1/2 teaspoons baking powder 1/2 teaspoon baking soda 1/2 teaspoon salt 1 cup (2 sticks) butter or margarine, softened 1 cup firmly packed brown sugar 2/3 cup granulated sugar 2 teaspoons vanilla extract 4 eggs 2 cups (12 ounces) semisweet chocolate chips,