Slice the zucchinis lengthwise into thin strips, about 1/8 inch thick. Lightly salt the zucchini slices and let them sit for about 10-15 minutes to draw out excess moisture. Pat dry with a paper towel.
In a mixing bowl, combine the ricotta cheese, half of the mozzarella, half of the Parmesan, the egg, minced garlic, dried Italian herbs, salt, and pepper. Mix until well combined.
Spread a thin layer of marinara sauce along the bottom of a 9x13 inch baking dish to prevent sticking.
Take one zucchini slice, add a generous tablespoon of the ricotta mixture at one end, and roll it up tightly. Place the roll in the prepared baking dish seam-side down. Repeat this process for all the zucchini slices and ricotta filling, arranging the rolls snugly side by side.
Once all the rolls are in the dish, pour the remaining marinara sauce over the top, covering them evenly. Sprinkle the remaining mozzarella and Parmesan cheeses over the sauce.
Cover the dish with foil and bake in the preheated oven for 25 minutes. Then, remove the foil and bake for an additional 15 minutes or until the cheese is melted and bubbly.
Once finished, let the lasagna roll-ups sit for 5 minutes. Garnish with fresh basil leaves before serving.
Notes
Let the zucchini sit with salt to draw out moisture for better texture.