If you're counting calories, try making this recipe with Sugar Free Jell-O Gelatin. In electric mixer bowl, cream butter and sugar until light and fluffy. Mix in egg yolk. Add flour and shape into small balls. Place on fork and dip into slightly beaten egg white, then into nuts.
Place cookies on ungreased baking sheet.
With thumb, press a hole in center of each. Remove from oven and press in center of each cookie again. Continue baking 15 minutes longer. Fill centers with grape jam. Pour over ice in punch bowl.