Instructions

1. 1
   Preheat oven to 350°F (175°C).
2. 2
   Cook macaroni according to package directions; drain.
3. 3
   In a large bowl, combine cheese, macaroni, milk, dry mustard, onion, soup, and salt.
4. 4
   Add salmon and frozen peas.
5. 5
   Place in a greased 9 x 13-inch pan.
6. 6
   Cover mixture with bread crumbs; drizzle with melted butter.
7. 7
   Bake for 45 minutes.