01 - Combine ground lamb, diced red onion, minced garlic, parsley, mint, oregano, cumin, smoked paprika, salt, black pepper, and 2 oz crumbled feta in a large bowl. Mix gently until just combined to avoid overworking the meat.
02 - Divide the mixture into 4 equal portions and shape each into a patty approximately ¾ inch thick.
03 - Heat a grill or skillet over medium-high heat and lightly oil the surface to prevent sticking.
04 - Grill patties for 5 to 6 minutes per side until evenly browned and cooked to medium doneness (internal temperature 160°F).
05 - Optionally, toast the burger buns lightly for added texture.
06 - On the bottom bun, place lettuce leaves, then a lamb patty, followed by sliced tomato, red onion, extra crumbled feta, and a spoonful of tzatziki or Greek yogurt. Top with the bun crown.
07 - Serve the assembled burgers immediately accompanied by preferred sides.