01 - Place eggplant slices on baking sheets and sprinkle evenly with salt. Let stand for 30 minutes to draw out excess moisture, then pat thoroughly dry with paper towels.
02 - Preheat oven to 400°F. Line two baking sheets with parchment paper and brush lightly with olive oil.
03 - Arrange three shallow bowls: place flour in the first, beaten eggs in the second, and mix breadcrumbs with 1/2 cup Parmesan, oregano, garlic powder, and black pepper in the third.
04 - Dredge each eggplant slice in flour, shaking off excess. Dip into beaten eggs, then press firmly into breadcrumb mixture to coat evenly. Place breaded slices on prepared baking sheets.
05 - Drizzle or brush tops lightly with olive oil. Bake for 20 minutes, flipping halfway through, until golden brown and crisp.
06 - Spread 1/2 cup marinara sauce evenly across the bottom of a 9x13-inch baking dish. Arrange half the baked eggplant slices in a single layer over the sauce.
07 - Spread 3/4 cup marinara sauce over the eggplant, then sprinkle with 1 cup mozzarella cheese.
08 - Repeat with remaining eggplant slices and remaining marinara sauce. Top with remaining mozzarella and the 1/2 cup Parmesan cheese.
09 - Cover dish with aluminum foil and bake for 20 minutes. Remove foil and continue baking for 10-15 minutes until cheese is melted, bubbly, and lightly golden.
10 - Let the dish rest for 10 minutes before serving to allow layers to set. Garnish with chopped fresh basil if desired.