Vegan Lentil Moussaka

An incredibly savory and comforting, vegan moussaka recipe, with layers of silky eggplant, veggies and lentils, covered by a crispy layer of mashed potatoes. EDITED: Potatoes, and several other small things. Note: Takes a lot of steps, but tasty!

Ingredients

Preparation

Soak lentils overnight in water with a splash of apple cider vinegar.
Chop the eggplant (½ inch thick rounds), carrots, celery, onion, and mushrooms.
Preheat oven to 400° F (200° C). Prepare two parchment paper-covered baking sheets. Arrange the eggplant slices on the baking sheets in a single layer. Brush them with 2 tablespoons of coconut oil/olive oil, sprinkle with salt, and roast for 20 minutes. Flip the slices and roast for another 15 minutes, until silky. Set aside. Lower the oven temperature to 375° F (190° C).
While the eggplant is roasting, drain and rinse the lentils. Cover them with water in a medium pot, and bring to a boil over high heat. Reduce the heat to a simmer and cook, covered, for 10-15 minutes or until cooked, but not mushy. Add salt at the end. Drain over a colander and set aside.
Place the potatoes in the same pot you used to cook the lentils, cover with water and bring to a boil over high heat. Reduce the heat to a simmer and cook until soft throughout. Add salt at the end, then drain, reserving ¼ cup of the cooking water. Return the potatoes to the same pot. Mash them with 2 tablespoons of olive oil and ¼ cup of the reserved cooking water. Taste for salt and adjust if needed. Continue to mash until smooth. Set aside.
Warm the remaining 2 tablespoons of coconut oil/olive oil in a large* saucepan over medium heat. Add onion, carrots, celery, salt, red pepper flakes, oregano and thyme. Sauté for 7 minutes, until the vegetables soften up. Add the mushrooms and sauté for another 8 minutes, until the water released by the mushrooms evaporates and they begin to brown. Add garlic and stir around for another minute.
Add the lentils, crushed tomatoes, smoked paprika, cinnamon and nutmeg to the pot with the mushrooms. Stir to combine, then cover and cook for 5 minutes for the flavors to incorporate.
Arrange half of the eggplant slices on the bottom of a 9"x13" baking dish. Top with half of the lentil mixture, followed by the remaining eggplant slices and lentils. Spoon the mashed potatoes on top, evening them out with a spoon into a smooth layer. Brush more olive oil over the potato layer and place the dish in the oven. Bake for 30 minutes. Remove from the oven and serve.