1. Preheat oven to 400F and line baking sheet with parchment paper. 
2. In blender, puree onions, garlic, salt, cumin, parsley, and egg together until smooth.
3. In a large bowl, mix blended onion mixture together with ground turket and breadcrumbs.
4. Form into 8 balls, place onto parchment lined tray and flatten into disks. Bake for 20 minutes or until the internal temperature reaches 165F.
5. In a small pot, sautee onions in olive oil. Add cumin and toast until fragrant. 
6. Add rice, salt and vegetable stick to the pot. Bring to a simmer and cook until liquid is absorbed and rice is cooked, approximately 20 minutes. Stir in frozen peas and let sit for 10 minutes. 
7. To make Tzatziki sauce, mix Green yogurt, garlic, lemon juice, salt and cucumber together in a small bowl. 

Serve koftas with rice and topped with Tzatziki sauce.