Somewhat notional recipe based on an older recipe we're not really using anymore.

Ingredients
1 box lasagna noodles (preferably oven-ready)
~ 4 cups marinara sauce
~ 4 cups shredded mozzarella
~ 1/2 cup shredded parmesan
~ 16 oz ricotta, mixed with a pinch of nutmeg
Pinch nutmeg
Large bag spinach and/or 1/2 lb loose Italian sausage

Preparation
Sauce
Noodles
Ricotta
Spinach and/or sausage and/or nothing
More Sauce
Mozzarella
Parmesan
Noodles
Repeat