Harrah's Bar B Que Hamburgers

1 1/2 pounds extra lean ground beef
3/4 cup Quakers Rolled Oats
3 tablespoons chopped onion or dried minced onion
1 cup milk
Salt and pepper to taste

Mix all the above ingredients and shape into good size hamburger patties. Place in roasting pan or sheet cake pan.

Sauce:
2 cups Heinz ketchup
6 tablespoons apple cider vinegar
4 tablespoons Worcestershire sauce
4 tablespoons granulated sugar
1 cup water

Mix well and pour over prepared patties. Bake uncovered at 325 degrees F for 1 to 1 1/2 hours.

Serve on hamburger buns. (If you double meat ingredients you should have enough sauce to cover all). Can also shape meat into small meatballs and serve as an appetizer.