Last night I did sauteed button mushrooms, minced onion, and some habanero salsa. In a piping hot corn tortilla of course. I did beet greens and the same habanero salsa earlier in the week. It was good too. I've done Bittman's nopal and potato & rajas in the past. Also good. Any other suggestions? I have some TVP that I bought at my local mexican grocery store, but I haven't seen it in mexican cuisine yet.