Preheat oven to 350 degrees F. Place a paper cupcake liner in each cup of a standard muffin pan.
To make crust: In a bowl, combine graham cracker crumbs, sugar and melted butter until crumbs are moistened. Press crust into bottom of each muffin cup. Put 1 peanut butter cup into the center of each crust.
To make the filling: Beat cream cheese with a handheld electric mixer until fluffy. Add sugar, flour, and vanilla, beating well. Add eggs, 1 at a time, beating well after each addition. Spoon cream cheese mixture over peanut butter cups and graham cracker crusts. Bake until just set, about 20 minutes. Allow to cool completely before serving.
Recipe courtesy of Paula Deen