01 -
Heat olive oil or butter in a cast iron skillet over medium-high heat. Add diced onion and bell peppers. Sprinkle in Italian seasoning, dried basil, salt, and black pepper. Sauté for 3 to 4 minutes, stirring occasionally, until the vegetables are softened and aromatic. Remove from heat and set aside.
02 -
Arrange 4 tortillas on a clean surface. Evenly spread marinara or pizza sauce over each, leaving a small border around the edges. Distribute the sautéed vegetables, pepperoni slices, and mozzarella cheese evenly over the sauced tortillas. Top each with a second tortilla, gently pressing to seal.
03 -
Return the skillet to medium heat. Place one assembled quesadilla in the skillet and cook for 2 to 3 minutes, until the underside is golden brown and crisp. Flip carefully and cook an additional 2 to 3 minutes, ensuring the second side is golden and cheese is fully melted.
04 -
Repeat the cooking process with the remaining quesadillas. Let each rest for one minute before slicing into wedges. Serve hot.