Line a baking sheet with parchment paper.
Carefully pour 1 teaspoon of melted chocolate onto the parchment paper, forming a circle 2" in diameter. You should have 12 small circles.
Refrigerate the baking sheet for 10 minutes.
Next, cut each banana in thirds so that you have 1 ½" long pieces. Discard the top and bottom of the bananas (or eat them, if you like).
Then skewer cake pop sticks in the center of the bananas and marshmallows.
Next, take out your pan from the refrigerator. Set aside.
One at a time, dip each marshmallow and banana in the melted chocolate and cover entirely. If there's excess chocolate dripping, shake it off. Place each piece onto the center of a chocolate circle. Decorate the hats with sprinkles, if desired, by using an extra cake pop stick to place a dab of melted chocolate in the place you want the sprinkle. Then carefully place the sprinkle on.
Refrigerate or freeze for at least 30 minutes.
Using a rubber spatula, carefully lift hats off the tray and onto a plate. Enjoy!