Ingredients
Method
- Heat oven to 350°F and grease a 9-by-13-inch baking dish.
- Boil macaroni until tender, drain and spread it in the dish.
- Melt butter, whisk in flour for 1 minute and gradually whisk in both milks.
- Simmer gently for 3 minutes, remove from heat and melt in American cheese and 8 ounces cheddar.
- Season with salt, mustard powder and pepper and pour over the macaroni.
- Top evenly with remaining cheddar and bake uncovered for 22 to 25 minutes until bubbling.
- Rest 10 minutes before scooping.