Peanut Butter Cup Cookies

1 cup butter
1 cup brown sugar
1 cup peanut butter
2 1/2 cup flour
1 1/2 tsp baking soda
1 cup sugar
1 tsp vanilla
2 eggs
1 tsp salt
2 packages Reese's miniature Peanut butter cups

Mix all together except Reese's. Roll into 2 inch balls and place in mini muffin tins. Bake at 350 for 7 to 10 minutes or until light brown. Unwrap Reese's peanut butter cups while cooking. Push Reese's into center of each cookie while hot. Let stand 10 minutes before taking cookies out of pan (use knife to cut around edges to loosen) Makes about 70