01 -
Heat olive oil or butter in a skillet over medium-high heat. Add diced onions and bell peppers with Italian seasoning, dried basil, salt, and pepper. Cook, stirring for 3–4 minutes, until softened and fragrant but not mushy. Transfer vegetables to a plate, leaving any residual seasoning in the pan.
02 -
Arrange tortillas on a flat work surface. Spread a spoonful of marinara or pizza sauce over each tortilla, ensuring even coverage to the edges.
03 -
Distribute sautéed vegetables evenly across half of the tortillas. Scatter pepperoni slices and generously sprinkle with freshly grated mozzarella cheese.
04 -
Top each filled tortilla with a second tortilla. Press gently to secure fillings within the edges and prevent cheese from leaking during cooking.
05 -
Return skillet to medium heat. Place each quesadilla into the pan and cook for 2–3 minutes per side, pressing lightly with a spatula for even browning. Turn when the underside is deep golden and cheese begins to melt. Repeat for all quesadillas. Slice and serve immediately while hot.