01 -
Warm the butter or olive oil in a medium skillet over medium heat. Toss in the peach chunks and cook them for 2-3 minutes until they soften and start to release their juices. Add the red onion slices and cook for another minute. Take the pan off the heat and put it aside.
02 -
Put a tortilla on your counter or cutting board. Scatter half the cheese all over the tortilla. Spread half of your peach and onion mix on top of the cheese. Sprinkle a tablespoon of cilantro on top and cover with another tortilla.
03 -
Move your assembled quesadilla to a big nonstick pan over medium heat. Cook it for about 2-3 minutes on each side, lightly pressing down with a spatula until you get a nice golden brown color and the cheese melts inside. Do the same with your leftover ingredients to make the second quesadilla.
04 -
Take the quesadillas out of the pan and let them cool for a minute. Cut each one into four equal pieces and enjoy while they're still warm.