Brown ground beef, and onion (I had a purple one - use what you have).
Clean zucchini, and remove the seeds or pulp from the middle.
This creates "little" boats.
Take the hamburger, onion, add the pulp, and Parmesan cheese.
Fill the boats with the hamburger mixture. Bake at 350 degrees for about 45 minutes or until
cheese melts, and golden brown.