01 - Arrange eggplant slices in a single layer on a baking sheet, sprinkle both sides with salt, and let sit for 30 minutes to draw out moisture. Pat dry thoroughly with paper towels.
02 - Preheat oven to 400°F. Line two baking sheets with parchment paper and lightly grease with olive oil or cooking spray.
03 - Place flour in one shallow dish. In a second dish, beat eggs with milk. In a third dish, combine breadcrumbs, Parmesan cheese, oregano, garlic powder, and black pepper.
04 - Dredge each eggplant slice in flour, dip into egg mixture, then coat evenly with breadcrumb mixture. Arrange coated slices on prepared baking sheets.
05 - Bake slices at 400°F for 20 minutes. Flip slices and bake an additional 10 minutes until golden and crisp.
06 - Lower oven temperature to 375°F in preparation for assembly.
07 - Spread 1 cup marinara sauce evenly in bottom of a 9x13-inch baking dish. Layer half of the baked eggplant over the sauce, then top with 1 cup marinara, 1 cup mozzarella, and a sprinkle of Parmesan. Repeat layers with remaining ingredients.
08 - Cover dish with foil and bake at 375°F for 20 minutes. Remove foil and bake an additional 10 minutes until cheese is melted and bubbly.
09 - Allow dish to rest for 10 minutes before garnishing with chopped fresh basil. Serve warm.