Brussels Sprouts and Rice Casserole

Name: Brussels Sprouts-and-Rice Casserole
Ingredients: 1 package frozen Brussels sprouts; ¼ c. water; 1 tbsp. stick margarine; 2 tbsp. all-purpose flour; 1½ c. 1-percent low-fat milk; ¼ tsp. salt; .13 tsp. white pepper; Cooking spray; 1 c. cooked long-grain rice; 1 oz. thinly sliced prosciutto or ham; ¼ c. fresh breadcrumbs; 2 tbsp. grated fresh Parmesan cheese