Preheat oven to 400° and grease baking pan.

Chop:

   - 1 onion

Cook onion together with:

   - 1 lb ground beef or Italian sausage

Drain beef and add:

   - 15 oz pasta sauce

   - 1 tsp salt

   - 1 tsp Italian seasoning

Simmer for 5-10 minutes.

Cook according to package directions, then drain:

   - 10 oz frozen spinach

Wash and slice into 1/8 inch rounds:

   - 2 lbs potato

Mix together:

   - 15 oz ricotta cheese

   - 1/2 cup parmesan cheese

   - 2 eggs

Grate:

   - mozzarella cheese, 3 cups grated

Layer in baking pan:

 1.  1/3 of the potatoes, overlapping is ok

 2.  half the egg mixture

 3.  half the spinach

 4.  half the meat mixture

 5.  1 cup mozzarella cheese

 6.  1/2 of the remaining potatoes

 7.  remaining egg mixture

 8.  remaining spinach

 9.  remaining meat mixture

10. 1 cup mozzarella cheese

11. remaining potatoes

12. remaining mozzarella cheese

Cover loosly with foil and bake for 45-60 minutes (until potatoes are tender).