In 4-quart saucepan or Dutch oven, combine all ingredients except flour and 1/4 cup water; bring to a boil.
Reduce heat to low; cover and simmer 10 minutes or until meatballs are thoroughly heated and vegetables are tender, stirring occasionally.
In small jar with tight-fitting lid, combine flour and 1/4 cup water; shake well.
Gradually stir into stew mixture; cook until thickened, stirring frequently.
Serve in individual bowls.