Heat oven to 350°F. In 1 ½-quart casserole or glass baking dish, mix green beans, soup and milk.
Bake 20 to 25 minutes, topping with onions during last 5 minutes of baking, until bubbly.
ALTERNATE METHOD: Heat oven to 325°F. In 1 ½-quart casserole or glass baking dish, mix green beans, soup and milk. Bake 25 to 30 minutes, topping with onions during last 5 minutes of baking, until bubbly.
