Line a baking sheet with parchment paper. Place chopped peanut butter cookies on a plate. Set aside.
Place the chocolate chips in a wide, flat microwaveable bowl and heat on HIGH 20 sec. Stir and repeat until chocolate is melted.
Dip 1 side of each halved banana into the melted chocolate then roll in the chopped cookies. Let stand for a few sec. to allow crumbs to adhere. Place on lined sheet to cool. Dip 1 end of each marshmallow in the chocolate and stand - chocolate-side up - on the sheet to cool 3 to 5 min.
For each kebob, thread 1 marshmallow onto skewer, followed by 1 halved banana (threaded lengthwise) and 1 maraschino cherry. Refrigerate until ready to eat.