In a large bowl, mix together ground turkey, onion, bread crumbs, celery, bell pepper, garlic powder, Italian seasoning, salt, pepper, egg, and ketchup.
Form mixture into a loaf in a 9x13 inch baking dish.
Bake in preheated oven for 25 minutes.
In a medium saucepan, combine beef broth, Worcestershire sauce, and flour. Cook and stir over medium heat until thickened.
Pour gravy over meatloaf and bake for an additional 5 minutes.
Interesting Facts
Turkey meatloaf is a healthier alternative to traditional beef meatloaf.
Ground turkey is low in fat, which makes it a healthier choice than ground beef.
Adding vegetables to the meatloaf adds extra nutrients and helps to keep the meatloaf moist.