12 cups bread crumbs 4 cups milk 6 envelopes onion soup mix 12 eggs 6 cups ketchup 3/4 cup mustard 3/4 cup brown sugar 12 lbs. ground beef
Preheat oven to 350. Mix meat with bread crumbs. In separate bowl, mix eggs, soup mix, ketchup, mustard, and brown sugar. Using your hands, mix meat and bread crumbs with ingredients in bowl. Divide mixture equally among 2, full-size catering pans. Bake for 1 hour or until internal temperature reaches 155. Drain any excess fat from the pan and let rest for 15 minutes before serving.