This treat works for all diets, but it will only be as sweet as the fruit you use, so choose fully ripe and preferably organic fruit. You can add more banana for sweetness, except on a low-FODMAP diet where only half a banana per serving is recommended—use the juice of half a sweet navel orange for added sweetness. If your cantaloupe is too sweet (you get used to less sweet food on these diets), add more lemon juice.
Tip
Your banana should be ripe or slightly overripe, since underripe bananas aren’t permitted on SCD, AIP, and GAPS diets because of the high starch content. As bananas ripen, their starch transforms into sugar and they lose their astringency (the feeling of having peanut butter stuck to the roof of your mouth). Overripe bananas, however, are high in fructose and not low-FODMAP friendly, although they’re fine on the other diets.
You can freeze bananas at the perfect ripeness and remove from the freezer 15 minutes before making this parfait, as with the cantaloupe— this will have the added benefit of creating a creamier texture.