5 tablespoons olive oil
1 small onion, chopped
1 carrot, chopped
1 celery stalk, chopped
1 tablespoon minced garlic
Salt and ground black pepper
2 cups cooked or canned cannellini beans
1 15-ounce can whole peeled tomatoes
4 cups vegetable stock or water
1 fresh rosemary sprig
1 fresh thyme sprig
1 pound chopped kale or escarole
4 large, thick slices whole-grain bread, toasted
1 small red onion, thinly sliced
1/2 cup freshly grated Parmesan