Thumbprints - cooking recipe

Ingredients

2/3 c. margarine
2 egg yolks
1/2 tsp. salt
2 slightly beaten egg whites
1/3 c. granulated sugar
1 tsp. vanilla
1 1/2 c. sifted flour
3/4 c. finely chopped walnuts

Preparation

Whip cream until stiff; sweeten to taste or leave unsweetened. Put through a pastry tube and make rosettes on a piece of wax paper the size of a cookie sheet.
Put in freezer overnight until hard.