1 med. head cauliflower
2 tbsp. water
1/2 c. mayonnaise or salad dressing
1 tsp. finely chopped onion
1 tsp. prepared mustard
1/2 c. shredded cheddar cheese

Leave cauliflower whole. Remove leaves and core center. Place in round glass pie plate. Add water and cover with wax paper. Microwave on high power 8 to 10 minutes. Combine mayonnaise, onion and mustard. Spoon over top of cauliflower and sprinkle with cheese. Microwave on medium high power 1 to 2 minutes to melt cheese. Let stand 2 to 3 minutes. Cut into wedges and serve.