Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a large mixing bowl, combine the ground turkey, breadcrumbs, Parmesan cheese, chopped parsley, minced garlic, red onion, oregano, cumin, salt, and pepper.
In a small bowl, whisk together the egg and lemon juice. Add this mixture to the turkey mixture and mix until everything is well combined.
Using your hands, form the mixture into 1-inch meatballs and place them on the prepared baking sheet, keeping them spaced apart.
Bake in the preheated oven for 20-25 minutes or until the meatballs are cooked through and golden brown on the outside.
Remove from the oven and let them cool slightly before serving. They can be enjoyed warm or at room temperature.
Serve the meatballs with a dollop of tzatziki sauce and garnish with fresh cucumber and tomato slices.
Notes
Serve warm or at room temperature with tzatziki sauce.