2 sticks butter, softened
2 c. sugar
3 lg. eggs
1 c. sour cream
1 tsp. vanilla
5 c. flour
2 tsp. baking powder
1/2 tsp. baking soda
1/2 tsp. salt

Cream butter and sugar until fluffy, add eggs, sour cream and vanilla. Sift flour, baking powder and soda and salt together. Mix well. Chill 2 hours or overnight. Roll level teaspoons into balls. Bake 3" apart on lightly greased sheets after flattening with sugar dipped glass. May also be rolled out and cut out with cookie cutters.