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1
Heat 30 ml olive oil in a heavy-bottomed pot over medium heat; add onion, carrot, and celery, sauté until softened, 8 minutes.
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2
Add garlic and cook 1 minute; pour in tomatoes with juice, stock, beans, and bay leaf; bring to a simmer.
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3
Cook uncovered 20 minutes, stirring occasionally, until vegetables are tender.
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4
Stir in cavolo nero and bread cubes, simmer 8 minutes until kale wilts and bread softens slightly.
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5
Season with salt and pepper; remove bay leaf.
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6
Drizzle remaining olive oil over each bowl, tear basil into soup, and serve hot.