01 - Preheat the oven to 400°F. Line two baking sheets with parchment paper.
02 - Place eggplant slices in a single layer on the baking sheets. Lightly brush both sides with olive oil and season with salt and pepper.
03 - Roast for 20 to 25 minutes, flipping halfway through, until tender and lightly golden. Remove from oven and allow to cool slightly.
04 - Lower oven temperature to 375°F.
05 - In a medium bowl, combine ricotta, Parmesan, egg, basil, parsley, garlic, nutmeg if using, salt, and pepper. Stir until mixture is smooth and uniform.
06 - Spread 1 cup of marinara sauce evenly over the bottom of a 9x13-inch baking dish.
07 - Place 2 to 3 tablespoons of the ricotta filling at one end of each eggplant slice. Roll up tightly and arrange seam-side down in the prepared baking dish.
08 - Spoon remaining marinara sauce over the eggplant rolls. Sprinkle evenly with mozzarella, Parmesan, and optional breadcrumbs.
09 - Cover baking dish with foil and bake for 20 minutes.
10 - Remove foil and bake for an additional 10 to 15 minutes until the topping is bubbly and golden brown.
11 - Let the rolls rest for 5 to 10 minutes before serving. Garnish with additional fresh basil if desired.