Step 1

Preheat grill to medium-high heat.

Step 2

Finely grate the cucumber.

Step 3

Place the cucumber in a colander to drain, pressing on it with a spatula until most of the liquid has been drained out.

Step 4

In a medium bowl, stir together the grated cucumber, yogurt, lemon juice, minced garlic, ¼ teaspoon salt, and olive oil to make the tzatziki.

Step 5

In a large bowl, gently toss together the ground turkey, oregano, feta, and remaining ½ teaspoon salt.

Step 6

Form the mixture into 4 patties, about ¾-inch thick.

Step 7

Place the patties on a grill, cover, and cook for 3 to 4 minutes, or until the patties release easily from the grill.

Step 8

Flip and continue cooking for an additional 3 to 4 minutes, or until the turkey is cooked through.

Step 9

Place the bottom of the buns on a work surface. Top each with a lettuce leaf and a slice of roasted red pepper.

Step 10

Top the roasted red peppers with the burgers, followed by 1 to 2 tablespoons of the tzatziki on top. Place the top half on each bun on top.

Step 11

Serve immediately, with any remaining tzatziki on the side.