In a large bowl combine turkey, defrosted spinach, and garlic powder and mix well.

Divide into 4 portions and form into ½-inch thick patties. Season both sides lightly with pepper.

Cook burgers on a preheated grill for 12 to 15 minutes per side or until cooked all the way through.

Remove from grill and let rest for 5 minutes.

Place each burger on a sourdough roll with 2 tablespoons Roasted Tomato Sauce and a few fresh spinach leaves.

TIP: When making burgers, remove the ground meat from the fridge about 20 minutes before forming into patties. Resist the urge to over handle while trying to form perfect-looking burgers. Over handling will cause the meat to toughen.