Broccoli Cheese Soup

3 10-oz packages frozen chopped broccoli (or fresh!)
6 cups chicken broth
6 tablespoons butter
1 onion, chopped
1/2 cup flour
2 cups milk
1 1/2 cups cheese (cheddar, combo of favorites or velveeta)
1 pinch ground white pepper

In a large pot over medium heat, simmer the broccoli in the broth for 15 minutes (or steam it if it is fresh). 

In a separate skillet over medium heat, melt the butter and add the onions.  Saute for 5 minutes or until desired tenderness.

Add flour to the onions and whisk forming a pasty substance. Gradually add the milk and stir until thick. Add this mixture to the broccoli mixture in the pot and stir well. Then add the cheese stirring until melted. Finally add the pepper.