Bring a large pot of salted water to a boil. Cook the lasagna noodles according to package instructions until al dente. Drain and set aside.
In a mixing bowl, combine the cottage cheese, ricotta cheese, egg, chopped spinach, dried basil, dried oregano, salt, and pepper. Mix well until fully combined.
In a 9x13 inch baking dish, spread 1 cup of marinara sauce evenly on the bottom. Place 3 lasagna noodles on top of the sauce.
Spoon half of the cottage cheese mixture over the noodles. Sprinkle 1 cup of shredded mozzarella over the cheese mixture.
Add 1 cup of marinara sauce over the mozzarella, and then layer 3 more lasagna noodles on top. Repeat the cheese mixture and mozzarella layer. Add the last 3 noodles on top, followed by the remaining marinara sauce and the last cup of mozzarella.
Sprinkle the grated Parmesan cheese evenly over the top layer of mozzarella.
Cover the baking dish with aluminum foil and bake for 25 minutes. Remove the foil and bake for an additional 15 minutes, or until the cheese is bubbly and lightly golden.
Remove the lasagna from the oven and let it rest for about 10 minutes before slicing.
Garnish with fresh basil if desired, and serve warm.
Notes
Let the lasagna rest before slicing for easier serving.