Heat oil in medium nonstick skillet over medium heat.
Add turkey; cook, stirring frequently, for 5 to 7 minutes, or until no longer pink.
Add taco seasoning and water; cook, stirring frequently, for 5 to 8 minutes, or until most water has evaporated. Remove from heat. Set aside.
Preheat oven to 375. Spray muffin tin with cooking spray.
Place one wonton wrapper in the bottom of each muffin tin. Press the wrapper all the way down and around the edges so that it sticks to the non-stick spray. Lay another wrapper over top slightly turned to create 8 corners. Press down same way.
Fill each cup with about 2 tablespoons of taco meat, most of the way full. Top with cheese.
Bake for about 13-15 minutes until the edges are browned and crispy and cheese is melted.
Carefully remove each cup. Top with shredded lettuce, tomatoes, greek yogurt and cilantro.
Serve warm and enjoy!