Combine 16oz of defrosted and squeezed spinach, 1/2 finely chopped onion and 3 pressed garlic cloves in a large bowl.
Add 1 lb of ground chicken, 1/2 cup crumbled Feta and 1 tablespoon grill spices. Mix well.
If you are using breast meat chicken, drizzle the spinach chicken mixture generously with olive oil and mix.
Add salt to taste.
Pre-heat oven to 400ºF.
Using a round tablespoon, form 20 or so meatballs, and arrange them on a greased baking sheet.
Bake for 15 minutes, until juices run clear.
If desired, finish for 2-3 minutes under a broiler to brown the tops more.
Serve with Yogurt Dill sauce (recipe below)