Once the sauce is done, pour it into the bowl with the prepared pasta and mix it together. Then stir in 1 cup of mozzarella cheese and 1 cup of parmesan cheese. Lightly spray a 13×18-inch sheet pan with nonstick cooking spray. Pour all the lasagna mixture onto the baking sheet and spread it out evenly.
Let the lasagna cool to room temperature. Then, place it in an airtight container and store it in the refrigerator for up to 3 to 4 days. You can also wrap it well in plastic wrap or aluminum foil and freeze it for up to three months. When ready to eat, or before repeating it in the oven or microwave.