INGREDIENTS
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Ingredients
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2 tablespoons butter
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3 medium sweet Spanish onions, sliced
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8 ounces fresh mushrooms, sliced
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1 cup (4 ounces) shredded Swiss cheese
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1 can (10-3/4 ounces) condensed cream of mushroom soup, undiluted
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1 can (5 ounces) evaporated milk
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2 teaspoons soy sauce
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6 to 8 slices French bread (1/2 inch thick)
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6 to 8 thin slices Swiss cheese (about 4 ounces)