Butter cookie

From Ars Cookbook

Butter Cookies

Makes 72 servings.
Ingredients:

• 1 cup sugar
• 1 pound butter
• 5 cups flour
• 1/4 pint sour cream
• 3/4 teaspoon salt
• 1 teaspoon vanilla
• 3 teaspoons baking powder
• 5 egg yolk

Directions:
mix dry ingredients together. Cream butter and sugar. Add egg yolks, sour cream and vanilla. Add dry ingredients. Press with cookie press onto un-greased cookie sheet. Brush tops with beaten egg whites and sprinkle with chopped walnuts. Bake 10-12 minutes at 350 degrees - bottom tray/6 minutes; turn, top tray/6 minutes.