Flank Steak in Mushroom Wine Sauce

From Mable Hoffman's Crockery Cookery. I really liked this crockpot dish. Flank steak is lower in fat than many cuts.

• Ready In: 7 hrs 15 mins
• Serves: 4-6

Ingredients

• 1 -1 1⁄2 lb beef flank steak
• 1⁄4 cup  sauterne white wine (regular dry white wine isn't quite as good)
• 1  tablespoon soy sauce
• 1  garlic clove, minced
• 10 1⁄2 ounces condensed beef broth
• 1  tablespoon ketchup or 1  tablespoon tomato paste
• 1  tablespoon prepared mustard
• 1  small onion, finely chopped
• 3  tablespoons cornstarch
• 1⁄4 cup water
• 1⁄2 lb fresh mushrooms, sliced

Directions

1. Put steak in crockpot.
2. Combine wine, soy sauce, garlic, broth, ketchup or tomato paste, mustard and onion. Pour over steak.
3. Cover and cook on low for 6 to 7 hours.
4. Turn to high. Dissolve cornstarch in water; stir into crockpot. Add mushrooms.
5. Cover and cook on high for 20-30 minutes or until mushrooms are tender.
6. For serving, meat should be cut across the grain.
7. Note: I remove the meat to a plate and cover with foil. I then put the sauce in a saucepan and heat over med-hi to high heat while stirring so that it's done more quickly than the method stated above.