Step 1

Drain canned tomatoes, reserving the liquid. Dice the tomatoes. Using a potato masher, mash half the beans into a paste (add a bit of broth, if desired, to make mashing the beans easier). Set the tomatoes and beans aside.

Step 2

Heat 2 tablespoons oil in a Dutch oven over medium heat. Add leek and garlic; cook, stirring, until translucent and tender, 2 to 3 minutes. Do not brown. Season with 1/8 teaspoon pepper. Stir in carrots, celery and zucchini and the remaining 1 tablespoon oil; cook, stirring, until nearly tender, 3 to 5 minutes. Season with 1/8 teaspoon each salt and pepper.

Step 3

When the carrots and celery are nearly tender, stir in kale (or chard) and cabbage. Cover and cook, stirring occasionally, until wilted, 4 to 6 minutes. Add potatoes, broth, water, the diced tomatoes and juice, the bean puree and whole beans, thyme and bay leaf. Bring to a simmer over medium heat. Season with celery seed, crushed red pepper and the remaining 1/4 teaspoon pepper and 1/8 teaspoon salt. Cover and cook, stirring occasionally and reducing the heat as necessary to maintain a gentle simmer, until all the vegetables are tender, 15 to 20 minutes.