1/2 c. butter
1/2 c. peanut butter
1/2 c. sugar
1/2 c. brown sugar
1 beaten egg
1/2 tsp. vanilla
1/2 tsp. salt
1/2 tsp. baking soda
1 c. flour

Combine all ingredients. Mix well. Drop by teaspoonfuls onto greased cookie sheet. Press down with floured fork in 2 directions. Bake until lightly browned (350 degrees).