Got this recipe from another low carb site. I tried it and it is great:

Chicken Broccoli Casserole

6 cooked chicken breasts (mine were grilled outdoors) 0 carbs
1 lb broccoli florets 16 carbs
1 8 oz. Package cream cheese 6 carbs
1/3 c heavy cream 3 carbs
1/3 c water
2 c. shredded cheddar 0 carbs

Dice chicken into bite sized pieces. Cook broccoli according to package directions or to crisp tender. Melt cream cheese with cream and water. Mix drained broccoli and chicken with sauce. Pour into casserole dish and top with shredded cheddar cheese.. Bake at 350 degrees for 30 min.

Makes 6 servings about 5 carbs each.