Turn up the heat to medium and add in the white beans and the tomato sauce. Stir and simmer for 5 minutes or until the veg is heated throughout.
Add in the kale and basil, and stir and simmer for 2 minutes more.
Season with salt and pepper, and serve warm.
Notes
You can sub in almost any vegetable for the zucchini, by adjusting the cooking time. I often make this with eggplant, peppers, summer squash, winter squash, etc.