[ChuckMcM]

There are a number of well fleshed out plans for doing essentially this. One of the more interesting ones for me was that microwaves can be used to fuse lunar regolith into a solid. One plan had a solar powered rover that sat there and microwaved the ground until is was solid far enough down, then would move forward on to that patch and start with the next patch. As I recall it would take about a month to make an acre sized "pad" which would support landing.