Assemble the Quesadilla
Spread a small amount of mayonnaise over each tortilla. Top one tortilla with the sliced apples, shredded cheddar cheese, or your choice, and the remaining tortilla.
Heat the Pan
Lightly grease a large, non-stick skillet with butter or cooking spray and heat over medium heat.
Grill and Serve – Add the tortilla and grill for 3 minutes or until the cheese is melted. Flip and grill the other side for an additional minute. Remove from heat, slice, and serve.
If this is for a school lunch, allow the quesadilla to cool down slightly before packing it in a lunch container.