01 - Preheat oven to 400°F. Line two large baking sheets with parchment paper.
02 - Arrange eggplant slices on a rack or tray, sprinkle both sides with salt, and let sit for 20 minutes to draw out moisture. Pat dry with paper towels.
03 - Set up three shallow bowls with flour, beaten eggs, and a mixture of breadcrumbs, 1/2 cup Parmesan, oregano, garlic powder, and black pepper.
04 - Dredge each eggplant slice in flour, dip into the beaten eggs, then coat thoroughly in the breadcrumb mixture.
05 - Arrange breaded eggplant slices on the prepared baking sheets, lightly brush or spray with olive oil, then bake for 20 minutes, flipping halfway, until golden and crisp.
06 - Heat 1 tablespoon olive oil in a saucepan over medium heat. Sauté minced garlic for 1 minute, then add marinara sauce and simmer gently for 5 minutes.
07 - In a 9x13-inch baking dish, spread a thin layer of tomato sauce. Layer half the baked eggplant slices, half the mozzarella, a sprinkle of Parmesan, and basil leaves. Repeat layers, finishing with cheese and basil on top.
08 - Bake uncovered for 20 minutes until cheese is melted and bubbly. Allow to rest for 10 minutes before serving. Garnish with extra basil if desired.