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1
Preheat the oven to 225u00b0F Meanwhile, bring a large pot of water to a boil, salt generously and add the kale. Blanch for two minutes, then transfer to a bowl of ice water. Drain, squeeze out water and cut into ribbons. Set aside. (I blanch the kale to extract some of the bitterness, but you can skip this step.).
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2
Heat 2 tablespoons of the olive oil over medium heat in a large ovenproof casserole. Add the onion, carrots and celery. Cook, stirring often, until the onion is tender, about five minutes. Add the garlic and cook, stirring, until fragrant, 30 seconds to a minute. Add the dissolved tomato paste, and bring to a simmer.
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3
Add the drained beans, the remaining water, the bouquet garni, herbes de Provence and salt and pepper. Stir in the kale, bring to a simmer, cover and place in the oven. Bake three hours until the beans are tender and creamy. (Made sure that the beans stay at a very slow simmer while in the oven. If they are not when you check, turn up the heat.) Taste and adjust salt.
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4
Mix together the remaining olive oil and the bread crumbs. Sprinkle the bread crumbs over the beans, and continue to bake another 30 minutes to an hour until the bread crumbs are lightly browned. Remove from the heat and serve; or allow to cool slightly and serve.
