Store fully cooled Banana Brownie Bites in a single layer inside an airtight container for 2 days at room temperature. Refrigerate them for up to 5 days. Place parchment between layers so the chocolate caps don't stick. For freezing, leave the caps off and freeze the bites on a plate for 1 hour. Then seal them in a freezer bag for up to 2 months. Reheat an uncoated bite at 300°F for 5 to 6 minutes. Then cool it for 10 minutes before adding fresh chocolate. A coated bite only needs 8 to 10 seconds in the microwave at 50 percent power. Discard any bite with sour banana odor, wet seepage or fuzzy spots. Dry white streaks on the chocolate are harmless bloom, but they signal poor temperature control.