1 cup ketchup
1/2 cup mustard
1/4 cup brown sugar

Mix the hamburger, bread crumbs, egg, onion and celery together.

In a separate bowl mix the ketchup, mustard and brown sugar together.

Take a quarter of the ketchup mix and mix it into the hamburger mix.

Form a loaf with the hamburger mix and place in a 9″x5″ loaf pan.

Top the meatloaf off with the rest of the ketchup.

Bake at 350 ~1 hour until cooked through.

Ground beef first came available to the US public during the Industrial Revolution. Lacking refrigeration in most homes it was slow to catch on. Most cooks used meat grinders to grind their own beef and other meats at home.

Early ground meat recipes cooked the meat before adding it to the recipe rather than cooking it afterwards as in meatloaf.

See also:
Meatloaf is a Versatile Comfort Food