1In 4-quart Dutch oven, cook beef over medium heat, stirring occasionally, until thoroughly cooked; drain. Stir in spaghetti sauce, mushrooms and water. Heat to boiling; reduce heat.
2In medium bowl, mix Bisquick mix, spinach, cheese and milk until soft dough forms. Drop dough by 10 spoonfuls onto hot spaghetti mixture.
3Cook uncovered over low heat 10 minutes. Cover; cook 10 minutes longer.