Almost Too-Easy Potato-Chicken-Cheese Soup

Almost Too-Easy Potato-Chicken-Cheese Soup

1 (5 1/4 ounce) package betty crocker au gratin potatoes
2 cups milk
1 cup cut-up cooked chicken (I use canned)
2 tablespoons minced onions
3 (14 ounce) cans chicken broth
1 (10 ounce) package frozen mixed vegetables

Mix everything (including sauce mix from pkg) in 4 qt pan.
Bring to a boil, stirring.
Reduce heat and simmer for 15 minutes or until vegetables are tender.