Position your oven rack to the middle and pre-heat to 400 F.
On the stove, heat a large oven-safe and non-stick skillet to medium heat. Add your beef and brown. Use a spatula or meat masher to break it into small, even crumbles and cook until most pink is gone.
Add eggplant, lentils, marinara sauce, and seasonings. Stir until well combined.
Cover and bake for about 20 minutes, or until eggplant is cooked down and can be easily pierced with a fork.
Remove lid, and sprinkle cheeses and bread crumbs. Cook uncovered for an additional 10-15 minutes, or until cheese is melted and bubbling.
Let it rest for 10 or more minutes before serving.
Calories: 543kcal, Carbohydrates: 46g, Protein: 45g, Fat: 21g, Saturated Fat: 10g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 7g, Trans Fat: 1g, Cholesterol: 101mg, Sodium: 1211mg, Potassium: 1609mg, Fiber: 12g, Sugar: 13g, Vitamin A: 1008IU, Vitamin C: 16mg, Calcium: 279mg, Iron: 9mg