Preheat oven 350.
Beat yolks, sugar, vanilla and butter.
Then add flour.
HAND PIPE THE DOUGH IN A PASTRY BAG WITH LARGE STAR TIP.
BAKE ON PARCHMENT LINED COOKIE SHEETS ABOUT 10 MINS. COOL AND SANDWICH WITH STRAWBERRY OR RASPBERRY JAM.
THEN, DIP IN MELTED CHOCOLATE AND SPRINKLES!