Created by Deely on November 11, 2011
Step 1: Preheat oven to 350*.
Step 2: Prepare macaroni according to package directions, draining well.
Step 3: Pour into your small casserole and stir in egg.
Step 4: Add 1 1/4 cups grated cheese.
Step 5: Stir in milk, dry mustard, salt and pepper.
Step 6: Bake, uncovered for 15 minutes or until bubbly.
Step 7: Top with remaining 1/2 cup cheese and heat 5 minutes until melted.