Creating Easy Apple Cinnamon Quesadillas is as simple as following these steps:

1. Prepare the Apples: In a bowl, toss the sliced apples with cinnamon sugar until they are well coated.
2. Melt the Butter: Heat a non-stick skillet over medium heat and add the butter, allowing it to melt completely.
3. Assemble the Quesadilla: Place one tortilla in the skillet. On one half of the tortilla, layer the cinnamon sugar-coated apples and cheese if using.
4. Fold the Tortilla: Carefully fold the tortilla in half to cover the filling.
5. Cook the Quesadilla: Cook for about 3-4 minutes on one side until golden brown. Flip and cook for another 3-4 minutes until the other side is golden and crispy.
6. Slice and Serve: Remove from the skillet, let cool for a minute, then slice into wedges.
7. Repeat: For the second quesadilla, repeat steps 3-6.

This straightforward method will yield delicious quesadillas that are sure to become a favorite!