Here's a link to something we do all the time:
How To Make a Quick, Vegetarian, One-Bowl Meal | Apartment Therapy The Kitchn
I'm not going to copy and paste the whole thing, but take a look.
Some one-bowl meal combos we enjoy:
Brown rice, black beans, cheese, salsa, sour cream, and the mystical Yumm! sauce
Polenta, black beans, cheese, salsa, sour cream
Polenta, mushrooms, marinara sauce
Brown rice, veggies, tofu, Soy Vay teriyaki sauce