I stole the idea from a Rachael Ray cookbook and have modified it, usually based on whatever leftovers I have. She called it a 'stoup', but I think it's more like vegetable soup.
Ingredients:
1/2-1 chopped onion
2-3 cloves chopped garlic
red pepper flakes
handful or two of carrots, sliced (I use baby carrots because they're usually in the fridge)
handful or two of green beans, cut up
2-3 c of cooked beans, pinto, black, whatever... (you can use canned if you prefer)
1-2 tomatoes or can/box of tomatoes (I like to keep a box of Pomi tomatoes on the shelf. They don't have any preservatives or salt and they're in a box rather than a can)
1-2 c vegetable stock if you've got it, otherwise water will work fine
salt, pepper, paprika, basil... whatever suits your fancy
Start cooking the onions, garlic, red pepper flake in the pot with a little bit of olive oil. After about a minute, throw in the carrots too and cook until the onions are translucent. Then add the veg stock and water, or just water. Just enough to cover the ingredients and then some. You can always add more as you go, depending on how 'soupy' you want it to be. Then add the green beans, tomatoes and cooked beans, as well as the seasonings. If I use fresh tomatoes, I usually throw in a bit of marinara too--maybe a half a cup? I cook it on med/low until the green beans aren't crispy anymore. The whole thing takes probably 20 minutes to cook. When I serve it, if I have extra penne pasta in the fridge, I'll throw that in too.
It's really good with a side of cornbread. Here's the recipe I've been using:
1 c cornmeal, 1 c unbleached flour, 1T baking powder, 1/2T sugar (or honey), 1t salt, 2T oil, 1c water, 2 "eggs" (2T flaxseed meal with 6T water--let it sit for a few minutes by itself before adding it into a recipe).
Mix this all together and pour into a greased 8x8 pan. Bake at 425F for 20 minutes (until the toothpick comes out clean).