In a small saucepan, heat the half-and-half and sugar over medium heat, stirring occasionally until mixture is very hot but not boiling. (Or heat half-and-half and sugar for 1 to 1 1/2 minutes in a 4-cup glass measuring cup in the microwave.) Add chocolate; let stand without stirring for 5 minutes.Advertisement
Stir chocolate mixture to combine. Stir in banana. Divide among 8 to 10 3-ounce pop molds. Insert sticks and freeze overnight.
If you don’t have molds, pour the mixture into 3-ounce paper cups, cover them with heavy-duty foil (or a double layer of foil), then insert wooden sticks and freeze. Tear off the paper and foil, then slurp away.