01 - Preheat oven to 400°F. Line two baking sheets with parchment paper.
02 - Arrange eggplant slices on prepared baking sheets. Brush both sides with olive oil and season with salt and pepper. Roast for 18–20 minutes, turning once, until tender and pliable. Remove and let cool slightly.
03 - Reduce oven temperature to 375°F.
04 - In a medium bowl, combine ricotta, Parmesan, mozzarella, egg, basil, parsley, garlic, nutmeg, salt, and pepper. Mix until well incorporated.
05 - Spread 1 cup of marinara sauce evenly over the bottom of a 9x13-inch baking dish.
06 - Place 2–3 tablespoons of ricotta filling at one end of each eggplant slice. Roll up tightly and arrange seam-side down in the baking dish. Repeat with all slices.
07 - Spoon remaining marinara sauce over the rolls. Sprinkle with remaining mozzarella and Parmesan cheeses.
08 - Cover baking dish with foil and bake for 20 minutes.
09 - Remove foil and continue baking for 10–15 minutes until bubbling and golden brown.
10 - Allow to rest for 5 minutes before serving. Garnish with fresh basil leaves if desired.