Flank Steak in Mushroom Sauce

Flank Steak in Mushroom Sauce

1 lb TO 1-1/2 lb flank steak
1/4 c Sauterne wine
1 tb Soy sauce
1 Clove garlic; minced
10 1/2 oz Can beef broth
1 tb Catsup
1 ts Prepared mustard
1 tb Instant minced onion
2 tb Cornstarch
2 tb ; water
1/4 lb Fresh mushrooms; sliced

Place steak in slow-cooking pot. Combine sauterne, soy sauce, garlic, broth, catsup, mustard, and onion; pour over steak. Cover and cook on low for 6 to 8 hours. Dissolve cornstarch in water; stir into pot. Add mushrooms. Turn control to high; cover and cook on high 20 to 30 minutes or until mushrooms are done.