Preheat oven to 325 degrees. Line 2 cookie sheets with PARCHMENT.Mix almond paste and granulated sugar in food processor until smooth. Add confectioners' sugar and 2 egg whites; process until smooth.Whisk remaining 2 egg whites in small bowl. Place pine nuts on shallow plate. With lightly floured hands roll dough into 1 inch balls. Coat balls in egg whites, shaking off excess, then roll in pine nuts, pressing lightly to stick. Arrange balls on cookie sheets, and flatten slightly to form a 1 1/2 inch round.