Preheat oven to 350 F (175 C).
Combine meat, oats, 1/3 cup ketchup, onion, egg, and 1 teaspoon bouillon; mix well.
In shallow baking dish, shape into loaf. Bake 1 hour.
Combine remaining 1/3 cup ketchup, 1 teaspoon bouillon, brown sugar, lemon juice and dry mustard. Pour over loaf and bake for 10 minutes.