Preheat oven to 180°C (350°F)
Combine egg, onion, relish, ketchup, parsley, salt and pepper in large bowl
Add meat and oats and mix thoroughly with wooden spoon or fingers
Pack into a loaf pan
Combine ketchup, brown sugar and mustard
Spread on top of meat
Bake in a moderate oven until meat is cooked (about 1 ½ hours)