greek turkey burgers with spiced yogurt sauce

Ingredients

• 1 pound ground turkey (i use the thigh mead, not as dry as the breast when cooked)
• 1/2 cup feta cheese crumbles
• 2 teaspoons dried oregano
• 1/2 teaspoon dried thyme
• 1/2 teaspoon ground black pepper
• 2 teaspoons olive oil
• 1/4 cup plain yogurt
• 1/4 teaspoon ground cumin (or to taste)
• - salt, to taste
• 4 - hamburger buns, toasted (i use whole-wheat)
• - lettuce, tomato slices and cucumber slices, for topping (optional)