Soak 2 wooden planks for at least an hour.
Preheat grill before using. Bring it to a medium heat.
Mix spices with ground beef. do not overmix, it makes the meat tough.
Form your burgers to your preferred size. Make sure you dimple each burger, you just lightly press your thumb down in the middle of each burger so a small imprint appears.
Place the patties on the planks, leaving a bit of space between each burger patty.
Place planks on the preheated grill. Put lid down and cook for about 6 to 8 minutes on each side.
I like mine to hit the grill for a bit more char and colour so once they are at about a medium rare I place each one on the grill grates and cook for about 1 to 2 minutes on each side.
Place patties back on the planks.
Cover each patty with a slice of each cheese. Put the lid down until the cheese melts.
Remove from grill carefully. Place on a platter to transfer to your work space.
Place bottom buns on plates. Top each with a burger, onion rings, and lots and lots of bacon. Place top bun on each. Use a skewer to hold each burger together.
Serve with a big old onion ring loving smile!