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 rest 20 minutes to draw out moisture. Pat dry with paper towels.
03 - Place flour in one shallow bowl, beat eggs in a second bowl, and mix breadcrumbs, 1/2 cup Parmesan, oregano, garlic powder, and black pepper in a third bowl.
04 - Dredge each slice in flour, dip in beaten eggs, then coat thoroughly in breadcrumb mixture.
05 - Arrange breaded slices on baking sheets, lightly brush or spray with olive oil, and bake 20 minutes, turning halfway, until golden and crisp.
06 - Heat 1 tablespoon olive oil in a saucepan over medium heat, sauté minced garlic for 1 minute, then stir in marinara sauce and simmer gently for 5 minutes.
07 - Spread a thin layer of tomato sauce in a 9x13-inch baking dish. Layer half the baked eggplant, half the mozzarella, a sprinkle of Parmesan, and some basil leaves. Repeat layers, finishing with cheese and basil on top.
08 - Bake uncovered for 20 minutes until cheese melts and bubbles. Let rest 10 minutes before serving. Garnish with extra basil if desired.