1/2 c. butter
1/2 c. peanut butter
1/2 c. brown sugar
1/2 c. sugar
1 egg
1 tsp. vanilla

Cream together and then add: 3/4 tsp. baking soda 1/2 tsp. salt

Mix well and form into 3/4 inch balls. Place in ungreased muffin tins. Bake 8 to 10 minutes at 375 degrees. Remove from oven; press Reese's peanut butter cup in center. Let cool 10 minutes. Remove from muffin tins. Store in air tight jar.