In a saucepan bring water to boiling; add lentils and garlic. Return to boiling; reduce heat. Cover and simmer 10 minutes. Add onion and green pepper. Cover and cook5 to 10 minutes more or till tender. Drain; return to pan. Stir in sauce, cinnamon and pepper. In a bowl beet egg slightly; stir in Parmesan cheese and parsley. Add pasta; toss to coat set aside. For topping: in a saucepan stir together milk and flour. Cook and stir till thickened and bubbly. Remove from heat. Stir in 1/2 cup of the mozzarella cheese. Beat egg whites till foamy. Fold egg whites into topping; set aside. Grease a 3-quart rectangular baking dish. Layer half the lentil mixture, half the pasta mixture, remaining lentil mixture, and remaining pasta mixture. Spoon topping over all. Bake, uncovered, in a 350 oven about 45 minutes or till hot. Top with remaining cheese and additional cinnamon, if desired. Let stand for 10 minutes. Makes 8 servings.