You can roll overly ripe bananas in chopped nuts and/or mini chocolate chips. Slide a skewer into the banana. Wrap tightly in plastic wrap and then freeze. You then eat them frozen. Somehow they end up tasting creamy. Almost like icecream. Kids love them.
Is your canned food problem caused by MSG? I know a few people who have a reaction to that. If so, be aware that even some powered spice mixes have MSG in them.