Prepare Tzatziki Sauce: Grate the cucumber and ensure to remove any excess moisture by wringing it out. In a bowl, mix the grated cucumber with Greek yogurt, dill, minced garlic, lemon juice, olive oil, salt, and pepper. Stir until well combined, then refrigerate until ready to serve.

Preheat Oven: Set your oven temperature to 400°F (200°C). While it’s heating, line a baking sheet with parchment paper to prevent sticking.

Mix Meatballs: In a large mixing bowl, combine ground turkey, panko breadcrumbs, minced onion, crumbled feta, minced garlic, egg, oregano, dill, cumin, salt, and pepper. Use your hands to gently mix until all ingredients are evenly incorporated.

Form Meatballs: Using your hands, shape the mixture into 1-inch balls. Place them neatly on the prepared baking sheet, ensuring they are spaced apart for even cooking.

Bake Meatballs: Pop the sheet into the oven and bake the meatballs for 15-20 minutes, until they’re cooked through and golden brown.

Serve: Once ready, serve the meatballs hot with the chilled tzatziki sauce and garnish with lemon wedges for an extra zesty touch.