Butterscotch Thins

1/2 cup butter
1/2 cup shortening
2/3 cup sugar
2/3 cup brown sugar
2 eggs
2 2/3 cup flour
1 1/2 tsp. baking soda
1 1/2 tsp. vanilla
1/3 cup chopped nuts

Cream butter, shortening and sugars.  Add eggs and vanilla and mix well.  Add dry ingredients and stir until well blended.  Form into long rectangular rolls and wrap in wax paper.  Chill.  When ready to bake, remove from wax paper and slice thinly (1/4 inch).  Bake at 375 for 10 minutes.  Makes about 8 dozen.