"This is a delicious green bean casserole, perfect for a holiday feast or Sunday family dinner...."
INGREDIENTS
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4 cups cooked French-cut green beans, about 1 1/2 pounds frozen or 3 cans (15 oz), drained
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3 tablespoons butter
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8 ounces sliced mushrooms
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1/4 cup finely chopped onion
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2 tablespoons flour
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1 teaspoon salt
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1/4 teaspoon ground black pepper
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1 1/2 cups milk
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1 1/2 to 2 cups shredded Cheddar cheese (6 to 8 ounces)
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2 tablespoons sour cream
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1 cup soft bread crumbs
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1 tablespoon melted butter
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Parmesan cheese, optional