Apologies that these aren't really "recipes" per se, but I never measure anything in the kitchen. Think of this as more of a general "how to."
I have an electric rice maker and a slow cooker (aka "crock pot"). With these two items I am able to buy dried rice and beans (pinto and black are my favorite) in 20 pound bags, this is a huge cost savings vs. canned/tinned beans.
The beans get soaked overnight, then discard this water (it contains the "farts") and cook them for several hours in the slow cooker until tender.
Rice gets cooked according to the instructions that come with the cooker.
Now we have rice and beans in abundance (you can make enough for a few days at once), this will provide adequate carbs and protein as the staple of our diet, plus a bit of iron and vitamins. However it will be extremely bland (notice we didn't even add salt), so we're not done yet!
The key to adding flavor to a vegetarian diet (or really any diet for that matter) is to choose a short list of basic flavorings you really enjoy! Most seasonings are just some combination of sweet, salty, sour, savory, spicy, and aromatic.
For example: olive oil, garlic, salt, balsamic vinegar
chilis, lime, salt, cilantro
sesame oil, soy sauce, rice vinegar
curry powder, cider vinegar, peanut oil, salt
Then you need to know how to cook vegetables (obviously). There are cookbooks to help you but it really isn't hard. The three secrets are:
1. Cut/chop in consistent-sized pieces so they cook evenly
2. Cook in simple, compatible combinations (a lot of rookie veggie chefs make stir fries with 12 different vegetables, some are overcooked, some are underooked--better to make more dishes each with fewer ingredients)
3. Start with high heat for flavor/color/texture, then add liquid and reduce heat to cook all the way through
So now you have 1 or more really flavorful veggie dishes, you can add that to the plate along with rice and beans and have a complete and flavorful meal! Season to taste at the table with pepper, salt, salsa, ketchup, sour cream, grated cheese, fresh herbs, whatever... that's how I've been doing it for decades!
Also don't forget to eat healthy whole-food snacks like fruit, nuts, raisins, etc. and take a daily multi-vitamin!