Heat a BBQ grill to a high heat.
Flatten the burgers on a piece of grease proof paper to so they are roughly the same size as you burger buns - Don't flatten them on the heated pan or BBQ as it squeezes the moisture out!
Spray the burgers with a little olive oil (or pat them with oil) and season with salt and pepper as you would a steak
Cook to your liking (roughly 2 minutes each side, remove from the heat, place a slice of cheese on each and cover with foil to rest. While the burgers are cooking pop the onion rings not he grill as well and char slightly on each side.
Now cook the bacon and when cooked to your liking place the bacon on top of the cheese topped burgers and place a couple of onion rings on each each burger
Keep the pan or bbq warm and place the buns (flat side down), and lightly toast.
To assemble your burger, place a table spoon (or more if you like) of burger sauce on the bun base and bun lid, add the pickle slices to the base, top with the burger stack, a lettuce leaf and lid - Add a skewer to hold it all togther and enjoy!