Greek Turkey Burgers with Tzatziki Sauce

Ingredients (22)

• For the Turkey Burgers:
• 1 pound ground turkey
• ½ cup fresh spinach leaves
• ⅓ cup sun-dried tomatoes
• 1/4 cup red onion
• ¼ cup feta cheese
• 2 cloves garlic
• 1 egg
• 1 tablespoon olive oil
• 1 teaspoon dried oregano
• 1/2 teaspoon kosher salt
• 1/2 teaspoon freshly ground black pepper
• 4 soft whole-wheat hamburger buns
• Bibb lettuce leaves
• Sliced red onion
• For the Tzatziki Sauce:
• ½ cucumber
• 3/4 cup low-fat plain Greek yogurt
• 2 cloves garlic
• 1 tablespoon red wine vinegar
• 1 tablespoon fresh dill
• Pinch of kosher salt and freshly ground black pepper