I don't eat tropical fruit often because of issues with sustainability. I never buy bananas, but I do pick up bruised ones from the co-op free bin (perks of working at an organic grocery store) and if I get really lucky, I trade with a neighbor for lovely locally grown ones!
2 ripe bananas, frozen
1 can coconut milk
1/4-1/3 cup agave or local honey, to taste
1 tablespoon vanilla extract
1 1/2 cups pineapple, finely diced
Peel bananas, chop into several pieces, and blend in a food processor for a couple minutes, until creamy. Add the coconut milk, honey and vanilla; blend until smooth. Pour into an ice cream maker add the pineapple and let it do it's thing until the consistency of soft serve. Transfer to a container to freeze. Enjoy when it's firm enough for you.