Prepare the Broccoli: Start by chopping the broccoli heads into bite-sized florets.
Cook the Broccoli: Place the chopped broccoli in a pot of boiling water and cook for 5 minutes, or until it is halfway cooked.
Prepare the Vegetables: While the broccoli is cooking, dice the onion, bell peppers, tomatoes, and garlic cloves.
Cook the Vegetables: In a large skillet, heat some olive oil over medium heat. Add the diced onion, bell peppers, tomatoes, and garlic, and sauté until they are tender.
Combine Ingredients: Once the vegetables are cooked, add the cooked chickpeas to the skillet. Season with salt, pepper, and paprika, and mix everything together.
Bake the Casserole: Transfer the cooked broccoli to a baking dish. Top with the sautéed vegetables and chickpeas. Slice the potatoes thinly and arrange them on top of the casserole. Sprinkle the mozzarella cheese over the top.
Bake: Bake the casserole in a preheated oven at 180°C for 20 minutes, or until the cheese is melted and bubbly.