Preheat the oven to 400°F and line a baking sheet with parchment paper.
In a large bowl, combine the turkey, feta, egg, shallot, garlic, breadcrumbs, olive oil, dill, oregano, mint, zest, salt, and pepper.
1 pound ground turkey, 1 cup crumbled feta cheese, 1 large egg, 2 tablespoons chopped shallot, 3 cloves garlic, 3/4 cup panko breadcrumbs, 2 tablespoons extra virgin olive oil, 1 tablespoon chopped fresh dill, 1 tablespoon chopped fresh oregano, 2 teaspoons chopped fresh mint, 1/2 teaspoon lemon zest, 3/4 teaspoon fine sea salt, 3/4 teaspoon ground black pepper
Roll into approximately 3 tablespoon meatballs and place on the prepared baking sheet. Bake for 20-23 minutes, or until a digital thermometer inserted into the center of one of the meatballs reads 165°F.
While the meatballs are cooking, prepare the tzatziki dipping sauce. In a medium bowl, combine the yogurt, cucumber, lemon juice, olive oil, garlic, dill, mint, salt and pepper. Taste and adjust seasonings, if desired.
1 cup plain whole milk yogurt, 1/2 cup cucumber, 2 tablespoons fresh lemon juice, 1 tablespoon extra virgin olive oil, 1 clove garlic, 1 1/2 teaspoons chopped fresh mint, 1 1/2 teaspoons chopped fresh dill, 1/4 teaspoon fine sea salt, 1/4 teaspoon ground black pepper
Serve the meatballs with the tzatziki sauce.
Notes
Make about 18 meatballs.
For a thicker tzatziki, use Greek yogurt or drain in a lined sieve for a few hours. Draining the grated cucumber will also make the sauce thicker.