Peel and slice 3 bananas.
Place 1 tsp of peanut butter over half of the banana slices.
Top with the other half to make peanut butter banana sandwiches.
Freeze the sandwiches in a plate or baking sheet covered with wax paper for at least one hour.
Just before the freezing time is over, place the chocolate chips and oil in a small bowl and microwave until melted (microwave for 15 seconds and stir, add 5 seconds at a time until melted). Stir until smooth.
Dip the sandwiches in the melted chocolate until half of the sandwich is covered.
Place the sandwiches in the same baking sheet or plate and freeze until the chocolate is solid, about one more hour. Enjoy!