Preheat oven to 350°F 
Defrost spinach. Squeeze out excess liquid.

In a bowl, combine beef, oat bran, onions, tomato paste, pepper and garlic. Mix well.

Divide mixture into 4 portions and, using clean hands, shape into large patties. Make a hollow in the centre of each patty and fill with one quarter of the spinach. Shape into round patties to enclose filling. Place in baking dish and spread remaining barbecue sauce over top of patties.

Cook uncovered in oven for 20 - 30 minutes or until meat is firm.
