Beat 12 oz. butter

Add in stages, just until incorporated :

1/2 lb. brown sugar
1/2 lb. white sugar

2/3 tsp. salt
12 oz. peanut butter

2-3 eggs
1 tsp. vanilla

1 lb. pastry flour
1 tsp. baking soda

Bake at 350 for 12- 15 minutes or until edges are browned.

Variation: Add chocolate chips