3 lbs. beef or sirloin tips
1 (1 1/2 oz.) env. dry onion soup mix
1/2 c. cooking wine
1 (10 1/2 oz.) can cream of mushroom soup
1 (4 oz.) can drained sliced mushrooms

Combine all ingredients in crock pot. Cover and cook on low setting for 8 to 12 hours. If desired, thicken gravy. Serve over noodles or rice.