Combine first 6 ingredients, stirring well; set aside. Combine breadcrumbs and Parmesan cheese; set aside.

Preheat oven to 350º F.

Place each chicken breast between two sheets of waxed paper; flatten to ¼-inch thickness using a meat mallet or rolling pin. Sprinkle with salt and pepper. Place spinach mixture evenly in center of each chicken breast. Fold long sides over spinach mixture; fold ends over and secure with wooden pick. Roll chicken in breadcrumb mixture, and place on a lightly greased 9 x 13-inch baking dish. Sprinkle with remaining breadcrumb mixture, and drizzle with butter. Bake at 350º F for 35 to 40 minutes. Yield: 6 servings.