I can't remember if I posted this, but a super easy chili is a:
1 big can of black beans,
1 can of chili beans, and
1-2 cans of beans of your choice (black, kidney, white/navy bean)
1 can of tomato sauce.
Sautee onions, garlic, green pepper (veg of your choice including spicy pepper if you like heat) in oil. Add can tomato sauce and cans of beans. Add spices (pepper, cumin, chili powder, oregano). Can also steam and add half of a cubed sweet potato. Cook until bubbling and heated through.
I serve it with either warm tortillas and cheese, sour cream, etc, or corn muffins which can be crumbled in the chili. It literally takes 20 minutes to make and so I've been making it once a week.
We also usually have tacos once a week. Not vegan but when I switch the meat to the "mexican meatless crumbles" kids like it just as well as ground meat. Serve with either black beans or refried beans.