In a sauce pan heat the oil, sauté the onions then add the spinach and the spices, stir until wilted. Remove from heat and add the feta cheese if you are using it.

Sprinkle some salt and pepper on the chicken.

Spread some mozzarella cheese on top

Spread the spinach mixture

Roll tightly and press while you roll, you can use some toothpicks to fasten the roll

Then roll tightly in a plastic wrap that will stand the heat

and then wrap tightly with foil

Place in an oven dish with a cup of water in it.

Place in a 350F oven for 30-40 minutes

When it is done unwrap and brown the roll in the oven

or on the stove top with some butter until golden brown and crispy.