Ooh yummy. I like this thread.
Not a vegetarian oneself, but always appreciate a good meat-free meal.
My offerings to this thread would be baked beans, and a mushroom lasagne.
Baked beans is simple enough. Fry a thinly chopped onion on a low heat for 10 minutes, making it nice and soft. For bonus flavour and bulk why not also add a couple of finely diced carrots and celery sticks in with the onion. During this whole sweat down, chuck in some garlic, crack in some pepper and maybe add chilli flakes. Possibly worcestershire sauce, or you could wait till later. Chuck in a tin of chopped tomatoes, bring up to heat. Chuck in a tin of beans. Flagellot, borlotti, canellini, butter would work. Heat it back up again, then flavour. Consider red wine, salt, sugar if your tomatoes are cheap or not sweet enough. Maybe the worcestershire sauce now, and some herbs - oregano maybe. Bouillon stock as well, but not too much depending on what the main vegetable base tastes like. Basically keep tasting and seasoning, until you think it's nice. After all this faffing about with little bottles of things, it will likely be cooked enough. Serve on nice thick crusty toast. Yum.
I can't remember the lasagne recipe, but it's basically layers of tasty reduced mushrooms (use a mix of types, wild and normal, total uncooked weight approx. 750g) with some kind of creme fraiche / stock based addition to make a creamy sauce, and then you also crumble a nice cheese in with the pasta layers. I have used cheshire, and that works ok. Top with normal bechamel, then bake. It tastes bloody great, anyway.