1. Preheat oven to 350°F. Line a large roasting pan with aluminum foil.
2. Shape ground beef into golf-size balls. Place on a prepared roasting pan and cook for 20 to 25 minutes until done.
3. Meanwhile, heat the jelly, chili sauce and mustard together in a 2-quart dutch oven.
4. Drain cooked meatballs and add to dutch oven. Cover and simmer on low for 30 minutes. Serve hot with toothpicks.