1/2 cup butter
1/2 cup firmly packed brown sugar
1/2 cup granulated sugar
1 1/4 cups all-purpose flour
1 egg
1/2 cup peanut butter
1/2 teaspoon vanilla extract
3/4 teaspoon baking soda
1/2 teaspoon salt

Mix the first three ingredients together. Add remaining ingredients and mix well. Form dough into walnut-size balls. Place in greased mini muffin tins (do not flatten).

Bake at 350 degrees F for 8 minutes (they will not look done, but do not over-bake) Press a mini peanut butter cup into the center of the cookie immediately after removing cookies from the oven. Let cool completely.

Makes approximately 48 cookies.