01 - In a large bowl, combine the ground beef, minced garlic, grated onion, chopped parsley, cumin, coriander, smoked paprika, chili flakes, salt, and pepper. Mix gently until just combined, being careful not to overwork the meat.
02 - Divide the mixture into 8 equal portions. Shape each into a thick oval patty, then gently flatten with your palm to about ¾ inch thickness to achieve the signature smashed shape.
03 - Heat olive oil in a large skillet or grill pan over medium-high heat. Sear the kebabs for 4 to 5 minutes per side until deeply browned and cooked through to an internal temperature of 160°F.
04 - While the kebabs cook, squeeze excess moisture from the grated cucumber. Combine with Greek yogurt, fresh dill, lemon juice, minced garlic, salt, and pepper. Stir well and refrigerate until ready to serve.
05 - Arrange the hot kebabs on a platter with generous dollops of cucumber yogurt sauce. Garnish with sliced red onion and fresh herbs. Serve alongside warm flatbreads or rice if desired.