1/2 c. butter
1/2 tsp. vanilla
1/2 c. peanut butter
1/2 c. brown sugar, firmly packed
1 egg
1 1/2 c. sifted flour
1 tsp. baking soda
1/2 tsp. salt

Turn oven to 375 degrees. Into mixer bowl, add butter, sugar, vanilla and peanut butter; blend well. Add egg and blend. In another bowl sift flour, soda, salt together. Add this to the sugar mixture.

Roll into small balls 1/2 inch in diameter. Place on cookie sheet 2 inches apart. Press down with fork. Bake in a moderate oven 12 minutes or until slightly brown.