Prepare the Corn & Black Bean Salsa. This can be done up to a few days in advance. Next, heat a large skillet over medium-low heat. Place the tortilla in the pan, then sprinkle the cheese evenly over the entire tortilla.
Add the salsa to half of the tortilla. If you are using salsa that was made ahead of time, warm it up in the microwave before using it.
Cook for 3-5 minutes, until the cheese is melted and the bottom of the tortilla is golden brown and crispy. Turn off the heat, then use a spatula to fold the half with just cheese over.
Remove the quesadilla from the pan and cut into 3 or 4 pieces. Serve immediately with toppings of your choice (additional fresh corn & black bean salsa, sour cream, guacamole, hot sauce, etc.) Enjoy!