AFAIK you could do it with multiple Falcon Heavy launches (with in orbit rendezvous) and something to put a Dragon on top of that would act like the Lunar desce

AFAIK you could do it with multiple Falcon Heavy launches (with in orbit rendezvous) and something to put a Dragon on top of that would act like the Lunar descent stage. Then you could use Dragon as the ascent and return stage. You'd probably have an orbital module too since going to/from the Moon in just a Dragon would probably be too cramped. Everything but the Dragon and the Falcon boosters would be expendable, but that's more reusability than Saturn V.