Smoky Grilled Turkey Zucchini Burgers

Steps

1. Preheat the grill to medium-high, about 400°F (200°C), and clean the grates.
2. Make the sauce first: stir the greek yogurt, the lemon juice, one third of the garlic and one quarter of the salt in a small bowl; chill until serving.
3. Grate the zucchini, wrap it in a towel and squeeze out as much liquid as you can.
4. In a large bowl, combine the turkey, the squeezed zucchini, the breadcrumbs, the remaining two thirds of the garlic, the paprika, the cumin, the black pepper and the remaining three quarters of the salt. Mix gently with your hands just until combined.
5. Shape the turkey mixture into 4 patties about 3/4 inch thick and press a shallow dent into the center of each so they cook flat.
6. Brush the red onion rounds with half of the olive oil. Lightly brush the patties with the remaining half of the olive oil.
7. Grill the patties and red onion rounds, covered, 5 to 6 minutes per side, until the onion is charred and tender and the turkey reaches 165°F (74°C) in the center. Rest the patties 3 minutes.
8. Toast the whole-wheat bread slices on the grill for about 30 seconds per side.
9. Assemble: spread the yogurt sauce on the toasted bread, then layer the romaine, a turkey patty, the tomato slices and the grilled red onion, and top with the second slice of bread. Serve right away.