INGREDIENTS
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6-8 boneless, skinless chicken breasts
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•2 cups assorted mushrooms, cleaned and sliced
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•1 (14.5 oz.) can crushed tomatoes
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•1 cup chicken stock
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•1/2 cup dry white wine
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•1/4 cup (1/2 stick) unsalted butter, divided
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•2 shallots, minced
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•1 large clove garlic, minced
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•3 tablespoons all-purpose flour, plus extra as needed
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•2 tablespoons extra-virgin olive oil
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•1 tablespoon fresh rosemary, minced
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•1 tablespoon tomato paste
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•kosher salt and freshly ground pepper, to taste