Gyro Burgers with Cucumber Yogurt Sauce

For the Cucumber Yogurt Sauce

• 1 cucumber
• 2 cups plain Greek yogurt
• ½ cup sour cream
• 2 tablespoons apple cider vinegar
• 2 teaspoons salt
• ¼ teaspoon black pepper

For the Burgers

• 1 pound ground lamb
• 1 cup crumbled feta
• ½ cup finely minced red onion
• 2 teaspoons salt
• 1 teaspoon pepper
• 6 gluten-free hamburger buns

1. To make the cucumber yogurt sauce, grate the cucumber into bowl and then drain out all of the liquid. Place shredded pieces into a larger mixing bowl and mix in the Greek yogurt, sour cream, apple cider vinegar, salt and pepper. Cover and refrigerate until ready to serve.
2. Preheat grill to high heat. To make the burgers, mix together ground turkey, crumbled feta, red onion, salt and pepper. Form the mixture into 6 equally sized patties.
3. Grill the burgers for 4 to 6 minutes on each side or until internal temperature reaches 165 degrees F. Serve on gluten-free hamburger buns.