Follow these simple steps to create a Vegetarian Moussaka that will impress your guests and delight your family:

1. Preheat the oven to 375°F (190°C).
2. Prepare the vegetables:

   • Brush the sliced eggplants and potatoes with olive oil.
   • Season with salt.
   • Arrange them on a baking sheet and roast for 20 minutes until tender and golden.

3. Prepare the lentil mixture:

   • In a skillet, heat some olive oil over medium heat.
   • Sauté the chopped onion and minced garlic until softened and fragrant.
   • Add the crushed tomatoes, rinsed lentils, oregano, cinnamon, salt, and pepper.
   • Cook the mixture for about 10 minutes, allowing the flavors to meld.

4. Assemble the Moussaka:

   • In a baking dish, layer half of the roasted potatoes.
   • Add a layer of half the roasted eggplants.
   • Spread the lentil mixture evenly over the vegetables.
   • Repeat the layers with the remaining potatoes and eggplants.

5. Add the finishing touches:

   • Pour the bechamel sauce over the top of the layered dish.
   • Sprinkle with grated mozzarella cheese if desired.

6. Bake the Moussaka:

   • Place the baking dish in the preheated oven.
   • Bake for 30-35 minutes until the top is golden and bubbling.

7. Serve and enjoy:

   • Allow the Moussaka to cool slightly before serving.
   • Slice into portions and enjoy the rich flavors of this Mediterranean classic.