Directions
Put the ground beef in a large mixing bowl.
Using a Microplane or fine grater, grate the onion directly into the bowl with the beef.
Add the feta, garlic, egg, parsley, mint, oregano, salt, and pepper.
Using your hands, gently mix until the are just incorporated.
Do not overmix.
Form the mixture into 36 meatballs, about 1½ inches in diameter each.
Preheat the oven to 350°F (175°C).
Heat the olive oil in a large, ovenproof skillet over medium-high heat.
Place the meatballs in the pan and cook until they are browned on all sides, about 5 minutes.
Work in batches if necessary to avoid overcrowding.
Transfer the skillet to the preheated oven and bake for 10 minutes, or until the meatballs are cooked through to an internal temperature of 160°F (71°C).
Serve the meatballs warm with the cucumber sauce and garnish with fresh mint sprigs.
Don't be afraid to swap the protein. This recipe works wonderfully with ground lamb, pork, turkey, or any combination of your favorite ground meats.