Toss with garlic powder, salt, pepper, and 1 Tbspn parsley.
Open bag of mozzarella and add in dried oregano and 1 Tbspn parsley, close bag and shake till all is combined.
Spray 9x13 casserole dish with non stick spray
Start layering! Marinara sauce first to keep from sticking then potatoes, sauce spinach, mushrooms, cheese mixes, and go again and again. For the top layer add more cheese and sprinkle a bit more parsley on top. Looks great!
Bake for 35 - 40 minutes on the middle rack. Let cool 5 minutes before serving, Enjoy!
Options to kick it up a notch: add 1 lb Italian sausage/ spice it up with 1 Tbspn red pepper flakes/ Keep it gluten free by using a gluten free sauce/ or add in more veggies.