Any ovo-lacto vegetarian Cinco de Mayo ideas?

I am fresh out of ideas for dinner tonight. I know I'll be serving margaritas, from scratch. The best I can come up with is huevos rancheros, but I want something with a bit more complexity. I'm fairly handy in the kitchen, so difficulty is not an issue. From scratch is good, fresh veggies are a plus, and I HATE bell peppers, so please keep that in mind. Oh yeah, no meat, too.