Step 1

Cover macaroni with water and cook until almost done, then drain well.

Step 2

In a microwave-safe bowl, melt margarine in the microwave, then stir in the flour and milk. Salt and pepper to taste.

Step 3

Pour cubed cheese into milk mixture and microwave at 30-second intervals until melted, stirring often. Stir in cooked macaroni.

Step 4

Place in an oven-safe baking dish and bake, uncovered, at 350 for 20 minutes.