Hamburger Cashew Casserole

1 -5 ounce package of noodles
1 pound hamburger meat
1 onion, chopped
2 tablespoons butter
1/2 teaspoon salt
1/2 pound cheddar cheese
1 can cream of mushroom soup
1/2 cup milk
2/3 cup chow mein noodles
1/2 cup cashews

Cook noodles according to package direction and drain.

Brown hamburger meat and onions in butter. Add salt, cheese, soup and milk. Mix well and pour into casserole dish. Bake at 325 degrees for 20 minutes. Add chow mein noodles and cashews and bake an additonal 10 minutes.