Peanut Butter Cookie Cups

1 and 3/4 cup flour
1/2 tsp salt
1 tsp soda
1/2 cup butter
1/2 cup sugar
1/2 cup peanut butter
1/2 cup brown sugar
1 egg
1 tsp vanilla
2 T milk

mix ingredients, roll into balls and place in greased mini muffin tins. Bake at 350 for 8 minutes. gently press mini p.b. cup into the center of each cookie. Let cool and carefully remove with a spoon.