Preheat your oven to 400 F. Line a baking sheet with parchment paper.
In a large bowl, mix together the beaten eggs, chopped baby spinach, mint, onion and garlic. Toss in the meat, breadcrumbs, salt + pepper to taste and feta. Gently combine everything. Form medium sized meatballs.
Bake for 20 minutes or until internal temperature reaches 165 F.
