Cheese and Broccoli Soup

1 can family size Cream of Chicken Soup
3 tablespoons grated onion
2 T. butter
2 cups shredded Cheddar cheese
3 cups milk
1 package fresh or frozen broccoli florets, steamed

In a large pot, sauté onion in the butter. Over low heat: Add can of soup (undiluted) to pot and stir. Add cheese and stir until melted. Add milk and stir until smooth. Add the steamed broccoli and stir. Simmer until bubbly. Serves four.