This is my favorite filling to use for quesadillas.
-1 can corn, drained
-1 can black beans, rinsed and drained
-shredded chicken (however much you like, or leave it out)
-salsa (enough to season it, but don't add too much or it will be too watery)
Combine in a bowl. Place a flour tortilla on a hot griddle (lightly buttered on one side, if desired). Sprinkle a small amount of grated cheese on half of tortilla, add a scoop of the filling and spread carefully, sprinkle on a little more cheese, and fold tortilla over itself. Cook about 2 minutes, or until browned; flip and repeat. Cut into wedges, and serve with sour cream and more salsa.