Gently mix all ingredients together except 1/2 cup ketchup using a fork or stiff fingers—do not squish the meat together, or you might get a tough loaf. Form into a loaf in the center of a glass baking dish and smear remaining 1/2 cup ketchup on top.
Bake at 350°F for at least 60 minutes, uncovered. I like ultra-caramelized ketchup, and this method creates a crusty tomato top that begs to be made into a sandwich! Place loaf in the fridge to firm up for sandwich slices the next day.
Adapted from Rustic Joyful Food: Generations by Danielle C. Kartes. Copyright © 2017 by Danielle C. Kartes. Used with permission by Lavender Press. All rights reserved.