These cookies would be great with a vanilla butter cream or cream cheese frosting. I found this recipe in one of my favorite cookbooks but must admit that I have not tried them yet but will for Valentine's Day.
Mix all dry ingredients together; add egg whites and sour cream. Mixture will be thick so you can add more egg whites. Put in plastic bag. Lightly grease cookie sheet. Cut a hole in bag and squeeze cookie mixture onto pan. Bake 10 - 14 minutes at 350 degrees. Frost with cream cheese or butter cream frosting.