01 - Arrange eggplant slices in a single layer on a baking sheet. Sprinkle salt on both sides and let sit for 30 minutes to draw out moisture. Rinse and pat dry with paper towels.
02 - Set oven temperature to 375°F.
03 - Place flour in one shallow bowl, whisk eggs with milk in a second bowl, and combine breadcrumbs, Parmesan cheese, and black pepper in a third bowl.
04 - Coat each eggplant slice with flour, dip into egg mixture, then cover with breadcrumb mixture evenly.
05 - Heat vegetable oil over medium heat in a large skillet. Fry eggplant slices in batches until golden brown, about 2 to 3 minutes per side. Drain on paper towels.
06 - In a small saucepan, heat olive oil over medium heat. Sauté garlic for about 1 minute until fragrant. Add marinara sauce and oregano, simmer for 5 minutes.
07 - Spread a thin layer of sauce in a 9x13-inch baking dish. Arrange half of the fried eggplant slices in a single layer. Layer half of the remaining sauce, half of the mozzarella, and a sprinkle of Parmesan cheese. Repeat layers with remaining ingredients.
08 - Cover loosely with foil and bake for 25 minutes. Remove foil and bake for another 15 to 20 minutes until bubbly and golden on top.
09 - Allow to cool for 10 minutes before garnishing with fresh basil and serving.