Chicken Divan, Lightened Up

1-1/2 lbs broccoli (3 large heads) chopped

24 oz boneless skinless chicken breasts (or 18 oz cooked)

salt and fresh ground pepper

1 tbsp butter

2 tsp extra virgin olive oil

2 cloves garlic, crushed

2 tbsp shallots, minced (onions would work too)

4 tbsp flour

1 cup fat free chicken broth

1 cup fat free milk

2 oz dry sherry (white wine would work)

6 oz shredded reduced-fat swiss

1/4 cup grated parmesan cheese

1/4 cup seasoned whole wheat breadcrumbs

cooking spray