This was figured out in science fiction long ago. Until you get established greenhouses underground, the fastest way to produce substantial and nutritious food is with microorganisms. You begin with them making the bulk of your nutritional needs, along with the dehydrated food you have brought with, and then you augment that with crops and finally animals.
Realistically speaking, this begins by sending nuclear powered tunneling robots, which burrow into a vertical cliff face and keep improving it until not only is there enough room for people, but a substantial amount of water and waste storage, and tunnels that will function as the home for a hydroponic garden.
But this isn't a science fiction thread. Or is it? With NASA it's hard to tell at times.
Award for unintentional irony
Realistically speaking, this begins by sending nuclear powered tunneling robots, which burrow into a vertical cliff face and keep improving it until not only is there enough room for people, but a substantial amount of water and waste storage, and tunnels that will function as the home for a hydroponic garden.
I went to Walmart the other day to get some nuclear powered tunneling robots, but they didn't have any. I then tried Grainger, but they didn't have any either.