1. Prepare and microwave cabbage wedges.
2. Place bell pepper, garlic and margarine in 2-cup measure. Microwave uncovered on high 1 to 2 minutes or until bell pepper is crisp-tender. Stir in flour, salt and pepper thoroughly; gradually stir in milk. Microwave uncovered 2 to 3 minutes, stirring every minute, until mixture boils and thickens.
3. Pour sauce over cabbage; sprinkle with cheese.