Microwave directions: In a 1-quart casserole combine squash, onion, green pepper, and margarine or butter. Micro-cook, covered, on 100% power (high) for 4 to 6 minutes or till tender. Stir in corn, shredded cheese, and pimiento. Cook, covered, on high for 2 to 4 minutes or till heated through, stirring once. Sprinkle with chopped nuts.