Meat Loaf

1 tablespoon canola oil 1 large onion, finely chopped 2 large carrots, finely chopped 1 celery rib, finely chopped 2 cloves garlic, minced 1 1/2 cups panko bread crumbs 4 large eggs 2 tablespoons Dijon mustard 2 tablespoons ketchup 2...