Halve bacon slices. Cook in large frypan until crisp. Drain reserving 2 Tb drippings. Set bacon aside. Sauté onion in reserved drippings. Blend in flour, chili sauce, molasses, mustard and salt. Gradually stir in e. Milk. Add waxed, kidney and green beans. Spoon into shallow 1 1/2 quart rectangular casserole. Bake in moderate oven (350) 25 min. Or until hot. Arrange bacon strips on top. Bake 5 minutes longer. Makes 6 to 8 servings.