For the breadcrumb topping
01 -
1 cup panko breadcrumbs
02 -
3 tablespoons unsalted butter, melted
03 -
1/4 cup grated Parmesan cheese
04 -
1/2 teaspoon garlic powder
For the pasta and sauce
05 -
1 lb (450 g) elbow macaroni
06 -
4 tablespoons unsalted butter
07 -
1/4 cup all-purpose flour
08 -
4 cups whole milk
09 -
1/2 cup heavy cream
10 -
1 teaspoon dry mustard powder
11 -
1/2 teaspoon paprika
12 -
Salt and black pepper to taste
13 -
4 cups sharp cheddar cheese, shredded
14 -
2 cups Gruyere cheese, shredded
15 -
1/2 teaspoon Worcestershire sauce (optional)