French Onion Beef

1 1/4 pounds Boneless beef round steak
1 package (8 oz) fresh sliced mushrooms
1 large Onion sliced into rings
1 can French onion soup condensed
1 package 15 minute herb stuffing mix
1/4 cup Margarine or butter, melted
4 ounces Shredded mozzarella cheese

Cut beef into 6 serving−size pieces.
Layer half of the beef, mushrooms and onion in 3 1/2 to 4−quart slow cooker; repeat layers.
Pour soup over ingredients in slow cooker.
Cover; cook on low setting for 8 to 10 hours or until beef is tender and no longer pink.
Before serving, toss stuffing mix and contents of seasoning packet with melted margarine and 1/2 cup liquid from pot.
Place stuffing on top of contents in slow cooker; cover.
Increase heat to high setting.
Cook 10 minutes or until stuffing is fluffy. Sprinkle with cheese; cover.
Cook until cheese is melted.