Ingredients
Method
- Preheat oven to 450°. Spray a 3-to 4-quart or 13x9-inch baking dish with nonstick cooking spray. Set aside.
- In a large Dutch oven, melt butter over medium heat. Add flour; cook, whisking constantly, 1 minute. Whisk in milk, salt, pepper, mustard, and nutmeg. Cook, whisking constantly, until thickened, 5 to 6 minutes. Stir in mozzarella, 4 cups Cheddar, and processed cheese until melted. Remove from heat. Stir in cooked pasta. Pour into prepared dish.
- Bake 10 minutes. Sprinkle with remaining 1 cup Cheddar. Bake until cheese melts, 4 to 5 minutes more.
