Preparation Preheat oven to 375°F. Grease 9x5x3-inch glass loaf pan. Heat oil in heavy medium skillet over medium heat. Add onion; sauté 5 minutes. Add celery; sauté until vegetables are very tender, about 15 minutes longer. Transfer to large bowl. Add all remaining ingredients except ketchup to vegetables in bowl. Mix thoroughly. Transfer to prepared pan. Bake 1 hour. Brush with ketchup and bake until thermometer inserted into center registers 165°F, about 15 minutes longer. Cool 5 minutes. Slice and serve.
Preparation Preheat oven to 375°F. Grease 9x5x3-inch glass loaf pan. Heat oil in heavy medium skillet over medium heat. Add onion; sauté 5 minutes. Add celery; sauté until vegetables are very tender, about 15 minutes longer. Transfer to large bowl. Add all remaining ingredients except ketchup to vegetables in bowl. Mix thoroughly. Transfer to prepared pan. Bake 1 hour. Brush with ketchup and bake until thermometer inserted into center registers 165°F, about 15 minutes longer. Cool 5 minutes. Slice and serve.