01 - Preheat oven to 400°F. Line two baking sheets with parchment paper and lightly oil or spray them.
02 - Arrange eggplant slices on a rack or paper towels, sprinkle both sides with salt, and let rest for 20 minutes to draw out moisture and bitterness. Pat dry thoroughly.
03 - Whisk eggs and milk in a shallow bowl. In another bowl, combine panko, Parmesan, oregano, basil, garlic powder, salt, and pepper.
04 - Dip each eggplant slice into the egg mixture, then coat evenly with the breadcrumb mixture, pressing to adhere. Arrange coated slices on prepared baking sheets.
05 - Lightly spray or drizzle slices with olive oil. Bake for 20 minutes, flip, then bake an additional 10 to 15 minutes until golden and crisp.
06 - Reduce oven temperature to 375°F. Spread 1/2 cup marinara sauce in a 9x13-inch baking dish. Layer half of the baked eggplant, cover with half the remaining marinara and half the mozzarella cheese. Repeat layers, finishing with sauce, mozzarella, and remaining Parmesan cheese.
07 - Bake uncovered for 20 to 25 minutes until cheese is melted and bubbling. Let rest for 5 minutes, garnish with fresh basil, and serve.