Instructions:

Preparation:
Preheat your oven to 375°F (190°C).
Prepare all vegetables by washing and cutting them into thin circles. Drain and rinse the chickpeas.
Sauté the Vegetables:
In a large skillet, heat a small amount of vegetable oil over medium heat.
Add the chopped onions and bell peppers, and sauté until softened.
Add the grated garlic and cook for an additional minute.
Create the Sauce:
Incorporate the tomato paste and continue to cook, allowing it to meld with the other ingredients for an additional minute.
Add the tomato puree, cumin, paprika, red chili flakes, vegetable bouillon, black pepper, and salt to taste.
Let the sauce simmer for about 10 minutes, adding a bit of water if it becomes too thick.
Layer the Casserole:
In a large baking dish, spread a thin layer of the sauce on the bottom.
Arrange a layer of potato slices, followed by zucchini, tomatoes, and red onions.
Sprinkle a portion of the chickpeas over the vegetables.
Pour some of the sauce over the layered vegetables.
Repeat the layers until all ingredients are used, finishing with a layer of sauce.
Bake:
Drizzle a little olive oil over the top of the casserole.
Cover the baking dish with aluminum foil and bake in the preheated oven for about 45 minutes.
Remove the foil and bake for an additional 15 minutes, or until the vegetables are tender and the top is slightly browned.
Serve:
Allow the casserole to rest for a short while before plating and serving.
Enjoy your Hearty Chickpea and Veggie Casserole warm, as a main dish or a hearty side.