Mix cake according to manufacturer’s instructions. Into a conventional cupcake pan, place paper liners then use a #16 blue scoop to deposit 1.5oz batter into each cavity. Bake at 350F until cupcakes spring back lightly when touched. Let cool completely. Mix together banana fruit bits and Bavarian creme to taste. Using a small round cutter, remove the center of each cupcake, pipe in prepared filling. Mix together 3 pounds of buttercream and 1 TBL of banana liqueur. Ice cupcakes with prepared buttercream and decorate with banana chip.