Preheat oven to 375°F.
Shred potatoes and press into a pie dish to form a crust.
Bake crust for 20 minutes.
In a bowl, whisk together eggs and milk.
Stir in feta, spinach, onion, garlic, dill, salt, and pepper.
Pour filling into potato crust.
Bake for 40-45 minutes until set.
