This is one of my most favorite Mom recipes. She didn't have to struggle to get me to take seconds, that's for sure. And, when I got married, I was surprised to find that other people's Cauliflower and Cheese isn't made almost-soup-like, but is more of a gloppy addition to steamed vegetables (not that that's not delicious, too, but I prefer my old favorite). My Mom's had perfect consistency (not gloppy but not soupy), so I don't know what I'm doing wrong, but it's still good!
Prepare cauliflower according to package directions, but stop before ¾ done. Drain. Half cover cauliflower with milk. Add Velveeta, other cheeses, and butter. Melt over reduced heat. Combine cornstarch with ¼ cup milk. Add to vegetables. Simmer until thickened.
***Note: You can substitute other vegetables like broccoli, cauliflower and broccoli, etc.
***Note: By various cheeses, I mean that this is a great recipe to get rid of "those last few crumbs" of whatever cheese you have - cheddar, mozzarella, even parmesan, if there's not too much. It just adds flavor. One time I finished up the cotija!