Put 400 g Turkey mince, 60 g Light Feta, 50 g Red onion, 40 g Spinach, 3 Garlic clove, 40 g Sun-dried tomatoes0.5 tablespoon Dried oregano, 0.5 tablespoon Dried parsley, 2 pinch Sea salt and 2 pinch Ground black pepper into a large bowl.
Using your hands, mix it all together.
Form the mixture into 4 burger patties and then put in the fridge for 30 minutes.
Heat 1 teaspoon Olive oil and fry the burgers for 7-8 minutes each side, turning regularly. Alternatively, put them under the grill for 15 minutes, turning half way through.
Divide half of the 8 tablespoon Tzatziki between the 4 Bread rolls Separate the leaves of 1 Little gem lettuce and put onto the tzatziki. Add slices of 2 Tomatoes and then the burgers. Top with the remaining tzatziki and serve.
Notes
Don't overwork the burger mixture, as that can make them dry out. Mix everything until just combined.
Put the burgers in the fridge for at least 30 minutes before cooking so they firm up and hold together (especially important if you are cooking them on the BBQ).
To form the patties, use cold, slightly wet hands - this will stop the mince sticking to your hands.
Use a meat thermometer to make sure the burgers are cooked fully. The cooked internal temperature of turkey mince should be 165°F/74°C. You don't want to overcook the burgers.
These are really thick burgers. You could make them into 6 smaller burgers, and they would cook quicker.