Begin by thinly slicing the red pepper and onion into bite-sized pieces, approximately 1/4-inch thick. In a large skillet, heat 1 tablespoon of oil over medium-high heat. Once hot, add the sliced vegetables, seasoning with salt and pepper. Sauté for 5-7 minutes, until tender and slightly caramelized, then transfer to a bowl.

While veggies are cooking, take three tortillas and carefully cut spooky face shapes. Aim for deeper cuts that will stand out but avoid tearing. Set these face-cut tortillas aside.

On three plain tortillas, evenly distribute the sautéed veggies. Follow with generous sprinkles of shredded mozzarella and cheddar cheese, and add a spoonful of salsa if desired.

Take the face-cut tortillas and gently place them on top of the filled tortillas to create the spooky quesadilla faces. Press down lightly to help the filling adhere.

Heat a non-stick pan over medium heat and lightly spray or drizzle with oil. Place one assembled quesadilla in the pan. Cook for 7-10 minutes, until the bottom is golden brown and the cheese has melted.

Once done, remove from the pan and cut into wedges for serving. Serve warm and enjoy these spooky snacks!