Meatballs and Cabbage

1 can mushroom stems and pieces
1 pound hamburger
1/4 cup onions
2 tablespoons soy sauce
1 tablespoon cornstarch
1 egg, slightly beaten
1/2 teaspoon ginger
2 tablespoons margarine
1 small head cabbage, chopped

Drain mushrooms, save liquid, add enough water to make 1/2 cup. Mince mushrooms and put in bowl with liquid, beef, onions, cornstarch, soy sauce, egg and ginger. Mix well and shape into balls. Put cabbage in large saucepan. Add meatballs and 1 cup water. Bring to boil. Cook in crockpot 2 to 4 hours on low.