Preheat oven to 350˚F. Cook lasagna noodles per boxes instructions, drain and set aside. Spread half of the marinara sauce in the bottom of the baking dish.

In a medium bowl mix together spinach, ricotta cheese, parmesan cheese, egg, garlic powder, salt and pepper.

Lay out a lasagna noodle on the counter. Take about 1/4 cup of filling and spread it evenly over the noodle. Roll the noodle up and place it seam side down in the backing dish. Repeat with all noddles.

Pour remaining sauce over rolled up noodles, top with mozzarella cheese. Cover the dish with foil and bake for about 40 minutes, until cheese is completely melted.