INGREDIENTS
3
cups elbow macaroni, cooked
1
pound lean ground beef
1
small onion, chopped
1/2
cup sliced fresh mushrooms (or 1 4.5-ounce can)
1
teaspoon salt
1/2
teaspoon garlic salt
1/4
teaspoon black pepper
1
can cream of mushroom soup (10 3/4 ounces)
1/2
cup sour cream
1 1/2 cups
shredded cheese of your choice
3
tablespoons butter, melted
1
cup panko crumbs