Spinach Souffle

2 tablespoons margarine, 2 tablespoon whole wheat flour, 1/2 cup skim milk, 5 oz chopped spinach cooked and drained, 1 tablespoon finely chopped onion, 1/4 tablespoon nutmeg, freshly ground black pepper, 6 egg whites, 3 tablesponns parmesan cheese.

In a small heavy saucepan melt margarine. Blen in flour, cook till mixture is smooth and bubbly. Remove from heat and gradually stir milk. Return to heat and bring mixture to a boil, stirring constantly. Cook 1 minute longer. Remove from heat, stir spinach, onion, nutmeg and pepper. Beat egg whites till stiff, fold gently into spinach mixture. Sprinkle with parmesan cheese. Pour it into 1 1/4 quart casserole. Bake at 350 degrees for 35 min. Serve immediately