Reuben Casserole

Serves:

• 1 package Hillshire Farm Polska Kielbasa
• 1 10.75-ounce can condensed cream of mushroom soup
• 1 1/4 cups milk
• 1/4 cup onion, chopped
• 1 1/2 teaspoons prepared yellow mustard
• 1 14-ounce can sauerkraut, rinsed and drained
• 4 cups uncooked egg noodles
• 1 cup shredded Swiss cheese
• 1/2 cup bread crumbs
• 2 tablespoons butter, melted