INGREDIENTS
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Nonstick cooking spray, for the pan
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4 tablespoons (1/2 stick) salted butter
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1/4 small white onion, finely chopped (optional)
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4 carrots, peeled and cut into 1/2-inch dice
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1/4 cup all-purpose flour
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8 cups (64 ounces) chicken broth, store-bought or homemade
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Two 22.6-ounce cans condensed cream of chicken soup
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4 cups shredded meat from 1 store-bought rotisserie chicken
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1 cup frozen peas
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Kosher salt and freshly ground black pepper
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Two 8-ounce tubes refrigerated crescent rolls
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Mashed potatoes, for serving