01 - Preheat oven to 425°F. Line a rimmed baking sheet with parchment paper and set aside.
02 - In a large mixing bowl, combine ground turkey, za'atar, minced garlic, grated red onion, parsley, salt, pepper, egg, and breadcrumbs. Using your hands, gently mix until all ingredients are evenly distributed without overworking the meat.
03 - With damp hands to prevent sticking, portion and roll the mixture into 16 to 20 uniform meatballs. Arrange them in a single layer on the prepared baking sheet with space between each.
04 - Bake for 18 to 20 minutes, flipping the meatballs halfway through the cooking time, until they are golden brown on the outside and cooked to an internal temperature of 165°F.
05 - While the meatballs bake, rinse rice under cold running water until the water runs clear. Transfer to a saucepan, add 2 cups water and a pinch of salt, and bring to a rolling boil. Cover tightly, reduce heat to low, and simmer for 12 to 15 minutes until liquid is absorbed. Fluff gently with a fork and keep covered until ready to serve.
06 - In a small bowl, whisk together tahini, lemon juice, minced garlic, and salt. Gradually add water, whisking continuously, until the sauce reaches a smooth, drizzleable consistency. Adjust with additional water as needed.
07 - Divide the cooked rice among four bowls. Arrange cucumber, cherry tomatoes, red cabbage, and sliced red onion over the rice in each bowl. Top with the baked meatballs, then drizzle generously with tahini sauce. Finish with crumbled feta, fresh mint, and a lemon wedge on the side. Serve immediately.