In small skillet, melt margarine over medium heat. Sauté onion, green pepper and mushrooms stirring frequently, until tender, about 5 minutes. Stir together with next 6 ingredients. Add noodles, mixing well. Turn into greased 2 quart casserole. Top with cheese. bake uncovered in 400º oven 20 minutes or until heated and cheese is melted.
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