Begin by melting the unsalted butter in a skillet over medium heat. Once melted, add sliced apples, ground cinnamon, kosher salt, and pure maple syrup. Sauté for 5-7 minutes until softened and caramelized.

While the apple mixture cools, place the flour tortillas on a clean surface. On one half of each tortilla, sprinkle a mixture of sharp cheddar and mozzarella cheese. Spoon an equal portion of the warm sautéed apple mixture onto the cheese.

Fold each tortilla in half and heat the skillet over medium-high heat. Place the quesadillas in the skillet and cook for about 3-4 minutes on each side until golden brown and crispy.

Once crispy, remove from the skillet and let rest on a cutting board for about 1 minute. Slice into wedges for easy serving.

Transfer wedges to plates and drizzle with additional maple syrup if desired. Serve warm for a cozy breakfast, optionally pairing with fresh mixed berries.