Slow Cooker Cheese Steaks

By Life Tastes Good

4.12 / 5

10min

4h 10min

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2 pounds beef tri tip steak
1 cup beef stock
1 tablespoon red wine vinegar
1 tablespoon Worcestershire sauce
2 teaspoons olive oil
1 large onion sliced
1 green pepper large, sliced
8 ounces sliced fresh mushrooms
12 slices white American cheese
6 French or Italian sandwich rolls split