Preheat oven to 400°F.
Combine cottage cheese, 1 1/2 cups mozzarella, parsley, salt and pepper in a bowl and stir to incorporate. Reserve.
Using your hands, squeeze excess moisture from spinach and separate spinach until it is no longer clumped (you should end up with about 3 1/2-4 cups spinach). Reserve.
Spoon 3/4 cup marinara sauce into the bottom of a disposable, high-sided lasagna pan. Fit matzah to cover as much of the bottom of the pan as possible, breaking into pieces where necessary. Pour 1 1/2 cups sauce on top of matzah and distribute evenly.
Spoon about 1 cup of the cheese mixture onto the matzah and distribute evenly. Sprinkle about 1 1/4 cups of the spinach on top of the cheese, then sprinkle 2 Tablespoons parmesan cheese. Repeat matzah-sauce-cheese-spinach-parmesan process two more times, then cover with a fourth layer of matzah.
Pour remaining 1 1/2 cups sauce on top of matzah.
Let lasagna rest for 15 minutes before baking to allow matzah to moisten slightly. Cover lasagna with foil and bake for 35 minutes.
Remove foil and sprinkle remaining 1 1/2 cups mozzarella on top of lasagna.
Reduce oven temperature to 350°F and bake lasagna an additional 30 minutes, until cheese is bubbly and browned around the edges.
Remove from oven, let rest for 5 minutes and serve hot.