Preheat oven to 350°F. Spray a 9x13 in. casserole dish with cooking spray

In a large saucepan set over medium heat, heat the marinara sauce until heated through, about 10 minutes. Add the spinach, 1 Tb. parsley, salt and pepper, and cook until the spinach has wilted. Set aside.

In a medium-sized bowl, combine the ricotta cheese, cottage cheese, and remaining 1 Tb. parsley. Set aside

Put a thin layer of sauce at the bottom of the casserole dish. Place the ravioli over the sauce. Once the pan is covered with 1 layer of ravioli, put a layer of sauce over the ravioli followed by a layer of the cheeses. Repeat until all the ravioli is used up.

Cook for 30-35 minutes.