Chili is great for this.
I do some kind of beans, some kind of meat, chili spices, some kind of tomato. I also will add in another vegetable for bulk and healthiness. Considering my husband is picky, this is normally peppers and onions.
Saute the veggies, brown the meat, maybe saute the spices to bring out the flavor. Cook the beans if you aren't using canned. Dump everything else in and let the flavors meld.
So:
Kidney beans, ground beef, tomato paste, canned tomatoes, chili spices (chili powder, cumin, cayenne pepper, oregano, garlic), peppers and onions.
Black beans, ground turkey, tomato paste, canned tomatoes, chili spices (chili powder, cumin, cayenne pepper, oregano, garlic), peppers, onions, corn.
White chili: White beans, chicken, chili spices (less chili powder in this one), green chili peppers and/or poblano peppers, onions
Other ideas:
Add in zucchini.
Black beans and pumpkin
Black beans and sweet potatoes