INGREDIENTS
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1⁄4 cup olive oil and more for garnish
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1 medium onion, chopped
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1 medium carrot, chopped
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1 medium celery stalk, chopped
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Salt and black pepper
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2 large potatoes, peeled and cut into 1-inch chunks
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1 cup chopped fresh tomatoes
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1 medium zucchini, cut into 1-inch pieces
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1 bunch kale or escarole, chopped
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1 cup canned cannellini beans, drained
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1⁄2 cup freshly grated Parmesan cheese