Spinach Feta Burgers

1 lb ground turkey or ground beef
1 egg
5 ounces fresh spinach, chopped
1/4 teaspoon pepper
3/4 cup crumbled feta cheese

Heat spinach for 1-2 minutes in a microwave in a covered bowl.

Combine in a large bowl the ground meat, egg, spinach, pepper, and feta cheese. Mix well. Form into 4 large hamburger patties. Grill or cook in a skillet for 6 minute on each side.