Heat 1 tablespoon of oil in a medium or large skillet, over medium-high heat. Add carrots and onion, and sauté for 5-6 minutes or until soft. Add spinach and garlic and continue to sauté for 1 minute. Remove from heat and let vegetables cool room temperature.
In a large bowl, mix ground turkey with the cooled sautéed vegetables, salt, and black pepper. Combine well and shape into 6 patties, about ¾-inch thick. Chill patties for 1 hour if possible, to help hold their shape better.
In the same skillet used to sautee the vegetables, heat the remaining 2 tablespoons of oil over medium-high heat. Cook patties for 5-6 minutes on each side or until internal temperature of the turkey reaches 165º F.
Serve with tzatziki and toppings of choice. Enhoy!