Directions

1. 1
   Cook the macaroni according to package instructions.
2. 2
   In a saucepan, melt butter over medium heat.
3. 3
   Whisk in flour and mustard powder, then gradually add milk until smooth.
4. 4
   Stir in cheeses and season with salt and pepper until melted and creamy.
5. 5
   Combine the macaroni with the cheese sauce, then transfer to a baking dish.
6. 6
   Sprinkle breadcrumbs on top and bake at 350°F (175°C) for 15 minutes.
7. 7
   Serve hot, garnished with parsley.