Finally to assemble, spread the BBQ sauce on the bottom hamburger bun. Add a slice of Cheddar cheese (it will melt with the heat of the beef patty) Then place the patty on top. Follow by adding the grilled pineapple, fresh red onion, beetroot slices, tomato slices and lettuce. Lastly just spread tomato sauce on the bun and place on top. Enjoy your Downunder Deluxe!