Peanut Butter Cup Cookies

½ cup butter or margarine
½ cup firmly packed brown sugar
½ cup smooth peanut butter
1 large egg
½ tsp vanilla
1 ¼ cups flour
¼ tsp baking soda
½ tsp salt
2 – 14 oz. Packages of miniature peanut butter cups

Mix all ingredients except the peanut butter cups. Beat for one minute after mixing.Form into one inch balls and place in mini muffin tins or on cookie sheet. Bake at 350 degrees for 8-10 minutes. While they are baking, remove the foil from the peanut butter cups. It works best if you eat one of every four that you unwrap.When the cookies come out of the oven, press one peanut butter cup all the way in to the center of each cookie. Let them cool for at least 15 minutes before removing to cooling racks.