Polynesian Roast

1 beef top round roast (I used London broil)
1/4 cup flour
1 tsp salt
1/4 tsp pepper
1 medium onion, sliced
1 can (8 oz) unsweetened sliced pineapple
1/4 cup packed brown sugar
2 Tbsp cornstarch
1/4 tsp ground ginger
1/2 cup beef broth
1/4 cup soy sauce
1/2 tsp minced garlic

Combine the flour, salt and pepper; rub over meat.  Place onion in a slow cooker; top with roast.
Drain pineapple, reserving juice; refrigerate the pineapple.  In a small bowl, combine the brown sugar, cornstarch and ginger; whisk in the broth, soy sauce, garlic and reserved pineapple juice until smooth.  Pour over meat.  Cover and cook on low for 7 to 8 hours.
Add the pineapple, cook 1 hour longer or until the meat is tender.

Serve with rice.