1. Parboil, then slice longways, remove seeds to create "boats".
cook up a "stuffing with ground meat, rice, diced potatoes, bell peppers, whatever you enjoy and then "stuff" the boats, top with your favorite cheese, pop into a pre-heated oven to bring up to serving temp and melt the cheese.
2. Cut into, oh, 2" lengths and core (an apple corer works well), stuff with your favorite mixture, place in a baking dish and nape with your favorite tomato/spaghetti/pizza sauce, bake in pre-heated oven until done.