Preheat oven to 350°.
Place granulated sugar and almond paste in a large bowl; beat with a mixer at medium speed until almond paste is broken into small pieces. Add amaretto and egg whites; beat on high speed 4 minutes or until smooth. Chill batter for 20 minutes.
Drop batter by teaspoonfuls 1 inch apart on parchment paper-lined baking sheets. Sprinkle evenly with turbinado sugar. Bake at 350° for 10 minutes or until edges of cookies are golden brown. Cool completely on pans; carefully remove cookies from parchment. Cool on wire racks.