Steps
1. Preheat the oven to 375°F (190°C).
2. Slice the sweet potato, zucchini, and leek into thin rounds.
3. In a baking dish, layer the sweet potato, zucchini, and leek slices.
4. Drizzle with olive oil and season with salt, pepper, garlic powder, and paprika.
5. Cover the dish with foil and bake for 30 minutes.
6. Remove the foil, sprinkle grated cheese on top (if using), and bake for an additional 10 minutes until golden.
7. Serve hot and enjoy!