Cup Cake Minimal

1 box of chocolate cake mix (plus ingredients required to prepare it) 1 cup creamy peanut butter 1 can (14 oz) sweetened condensed milk 1 jar (12 oz) chocolate fudge topping 1 container (8 oz) cool whip, thawed 1/2 cup crushed peanut butter cups for garnish -Preheat your oven and bake the c