View source for Spinach Burger Meatballs

*1 lb ground beef
*1 block frozen spinach
*1 pkg onion soup
*1 cup mozzarella 
*1/2 cup panko or breadcrumbs
*1 egg

Preheat oven to 400 degrees.

In a large bowl, mix together ingredients until well-combined.  Shape into balls and place on a greased baking sheet or in a 9×13 baking dish.  Bake for 10-12 minutes, or until meatballs are golden on the outside and no longer pink on the inside.