Cut bananas in half lengthwise.
Insert popsicle stick or skewer in the cut end of each.
Place skewered bananas on parchment paper-lined baking tray, and transfer to freezer for 45 minutes.
After 45 minutes, place chocolate and shortening/oil (if using) in small mixing bowl, and microwave for 30 seconds.
Stir chocolate, return to microwave for 15 seconds.
Repeat cycles of stirring and microwaving until fully melted.
Remove bananas from freezer.
Dip each banana in chocolate, allowing excess chocolate to drip off.
Sprinkle chocolate-coated banana with sprinkles or nuts, and return to prepared tray.
Repeat until all bananas are coated.
Return to freezer for 15 minutes or until chocolate is firm.
Enjoy!
Any leftovers should be stored in the freezer.