Tofu Tacos

Yeah, I think I'll keep this intro brief and just present the links without comment: here and here.

Recipe

Tacos

1 tbsp vegetable oil
1 onion, chopped
1 handful cilantro, chopped
1 brick extra-firm tofu
1/2 tsp paprika
1/2 tsp cayenne pepper
1 tbsp tomato paste
salt, pepper
6 corn tortillas
optional:
cheddar cheese, shredded
avocado, thinly sliced
tomato, chopped

Heat the oil in a deep pan, then saute the onions and cilantro, seasoned with salt, pepper, paprika, and cayenne pepper.  Crumble the tofu into the pan, add the tomato paste, and cook 3-5 minutes.

Line a baking pan with tin foil with three pockets for your tortillas.  Fill each tortilla with the tofu mixture and top with avocado, tomato, and cheese.  Bake for about 10 minutes at 400 degrees.

Papaya salsa

1 whole papaya
1/2 a red onion, finely diced
1 tomato, coarsely chopped
2 garlic cloves, finely chopped
juice of half a lime
1 tsp Mexican seasoning (or sprinkles of paprika, cumin, chili powder, garlic powder, onion powder, red pepper, oregano, salt, pepper, cinnamon, cloves)
salt

De-seed and -skin your papaya and chop into bite-size chunks.  Mix together with everything else.

Notes

As expected, it's really not quite as good as the real thing.  But it does have some nice things going for it - it's cheap and fast, feels very healthy, works well as a team effort, and (relatedly) I assume there's a reason you were looking for something vegetarian...  It came out as four big tacos.  Also just be aware that you'll have way more salsa than you need, so definitely plan on other ways to finish that off.