Use cooked beans, tomatoes, a vegetable, water and your favourite seasoning. Canned beans are convenient; follow the packaging instructions. Pair with rice, bread or potatoes if you like.
Cook the vegetables until tender, add the cooked beans and tomatoes, and simmer until hot throughout. Adjust water and seasoning to taste. This is a flexible idea, not a fixed diet.
One small step to try
Use one vegetable that needs using up.
Small steps make a difference too.