1/2 c. butter
1/2 c. peanut butter
1/2 c. sugar
1/2 c. brown sugar
1 egg
1/2 tsp. vanilla
1 1/4 c. flour
3/4 tsp. baking soda
1/2 tsp. salt
48 miniature Reese's peanut butter cups

Cream butter, peanut butter, sugars, egg and vanilla. Stir in dry ingredients. Roll dough into 1 inch balls. Press into mini muffin tins.

Bake at 350 degrees for 12 minutes. Remove from oven and immediately press 1 peanut butter cup into cookie. Cool on wire rack.