Slice all the veggies and wash them. Let them drain properly. Then in a mixing bowl, add the veggies along with a little bit of olive oil, salt and cumin powder. Mix using your hands. Heat the convention oven at 400F and place all the veggies single layered on the baking sheet on top of the aluminum foil. Spread the veggies evenly. Place the tray in the preheated oven for 15-20 minutes until the veggies are nice and soft.

Heat the cast iron flat plan and using a cooking spray or olive oil coat the pan. Place one of the tortillas on it. Then sprinkle a little bit cheese and then the roasted veggies on top. If you are using some kind of hot sauce, put it on top of the veggies and then sprinkle more cheese and top it with another tortilla.

Let it cook for a couple of minutes and carefully turn the quesadilla on the other side. Press it with the spatula so that both the tortillas stick together with the help of the cheese.

Take it off the heat after you get the desired crispiness and cut it into 4 or 8 pieces using the pizza cutter. Serve it with your favorite salsa and sour cream.