Eggplant lasagna is a healthy and delicious twist on the classic Italian dish. Start by slicing the eggplant into thin rounds and then grill or bake until tender. Layer the eggplant in a baking dish with tomato sauce, ricotta cheese, and mozzarella cheese. Repeat the layers until the dish is full and then bake in the oven until the cheese is melted and bubbly. Serve with a side salad for a complete meal.