Broccoli Cheese Soup

This is a yummy recipe I got from my MIL. Love it!

1 cup butter
1 cup finely chopped onion
1 cup flour
2 cups chicken broth
8 cups milk
1# Velveeta cheese, cut into chunks
Cooked broccoli - chopped

Saute the onions in butter until transparent. Add flour and stir for 1 minute. Gradually add broth, milk, and cheese. Stir in broccoli.