1 head cauliflower
2 tbsp. water
1/2 c. mayonnaise
1 tsp. chopped onion
1 tsp. prepared mustard
1/2 c. shredded Cheddar cheese

Place cauliflower in 1 1/2-quart glass casserole or microproof container. Sprinkle with water; cover with plastic wrap and pierce plastic wrap. Microwave on High power for 8 to 9 minutes or until cauliflower is tender-crisp.

Combine mayonnaise, onion and mustard in small mixing bowl. Spoon mixture on top of cauliflower. Sprinkle cheese over this. Microwave on Toast (70) for 1 1/2 to 2 minutes to heat topping and melt cheese. Let stand 2 minutes.