Start by salting your eggplant slices and letting them sit for 30 minutes. This draws out excess moisture and bitterness. Pat them dry thoroughly with paper towels.
Set up your breading station: one shallow dish with flour, another with beaten eggs, and a third with seasoned breadcrumbs.
Dip each eggplant slice first in flour, then egg, and finally breadcrumbs, ensuring even coating.
Heat olive oil in a large skillet over medium heat. Fry the breaded eggplant slices until golden brown, about 2-3 minutes per side. Place on paper towels to drain excess oil.
Preheat your oven to 375°F (190°C).
In a 9x13 baking dish, spread a thin layer of marinara sauce. Add a layer of fried eggplant, slightly overlapping the slices.
Top with marinara sauce, mozzarella, and Parmesan. Repeat layers until all ingredients are used, finishing with cheese on top.
Bake uncovered for 25-30 minutes, or until the cheese is bubbly and golden brown.
Let rest for 10 minutes before serving. Garnish with fresh basil leaves.