For a vegan version, buy gelatin-free marshmallows or substitute with almond butter and maple syrup (here’s a recipe for healthy vegan rice crispy treats). Or, substitute every 1 cup of marshmallows (8 pieces) with 1/2 cup marshmallow fluff (which also has no gelatin).For gluten-free, use a gluten free puff cereal and check the marshmallow package too.