In a bowl combine the roasted garlic and mayonnaise. Refrigerate until needed. Preheat the grill to high. Season the Steakburger patties with salt and pepper. Grill the burgers for 3 to 4 minutes per side or until cooked to your desired doneness. Remove from grill. Reduce the grill heat to low. Spread both sides of the bun with the mustard and the garlic mayonnaise. Place the cheese on the bun followed by the patty. Top the patty with ham, pickles and the second slice of cheese. Cover with the other bun. Wrap the burgers in foil and place back on the grill weighted by a cast iron pan or other heavy object. Cover the burgers and cook for an additional 2 minutes.