Chicken, Spinach & Artichoke Casserole

ngredients: ¼ c. arugula ¼ tsp. ground nutmeg ½ tsp. garlic 1 tbsp. sun-dried tomatoes ¼ c. artichoke hearts 2 tbsp. mozzarella 1 tbsp. butter 2 oz. cooked chicken 1 c. baby spinach 2 tbsp. cream