Preheat oven to 400 F.
In a large mixing bowl, combine beef with breadcrumbs, dill, garlic, lemon zest, lemon juice, cumin, oregano, pepper, feta cheese, and egg. Mix well to form into a uniform consistency. Set aside for 15 minutes or refrigerate overnight.
Take 2 spoonfuls of the beef mixture at a time and roll into meatballs. Transfer meatballs onto a parchment-lined half sheet baking pan and lightly coat with some cooking oil spray to keep them from sticking, if needed.
Bake for 15 minutes until fully cooked. The internal temperature should reach 160F as read on a meat thermometer.
Serve with a drizzle of tzitaziki sauce, extra dill sprinkled on top, and a side of pita bread.
