Directions

1. Preheat the oven to 425 F.
2. Bring a generous pot of salted water to a boil.
3. While the water is heating up, melt butter in a heavy skillet over moderately low heat.
4. Add flour and cook, whisking, until the mixture starts to turn light golden (about 3 minutes).
5. While whisking, add milk and bring to a boil.
6. Add mustard and spices. Cook until thickened, stirring occasionally (about 2 minutes).
7. Add macaroni to the pot of boiling water and cook until al dente, about 6 minutes. Drain the macaroni and transfer to a 2 quart baking dish.
8. Stir in sauce, grated cheese, 1/2 C Parmesan, and anything else that strikes your fancy. Smooth down the top.
9. Mix the bread crumbs and remaining Parmesan together.
10. Sprinkle the bread crumb mixture over the casserole.
11. Dot with the butter.
12. Bake for 10-15 minutes, until the dish is bubbling and the topping turns golden brown.