Preheat a grill or grill pan on medium-high heat

In a mixing bowl, stir together the ground lamb and all the spices and salt and pepper, until well combined. Shape this mixture into 4 circular patties

Cook the burgers on the grill without flipping until they begin to get firm and brown around the edges, about 5 minutes. Flip and cook for another 5 minutes on the other side, or till a thermometer reads 140F in the center of the patty. Rest the burgers for at least 5 minutes while you assemble the toppings.

Mix together the burger sauce by combining the mayonnaise and mustard in a small bowl.

Spread about 1 tablespoon of sauce on each bun. Top the buns with a lamb patty, lettuce, tomatoes, and greens. Serve and enjoy