1Heat oven to 350ºF.
2Spread 1/3 cup of the cheese evenly over half of each tortilla. Sprinkle tomato, onions, chilies and cilantro over cheese. Fold tortillas over filling. Place on ungreased cookie sheet.
3Bake about 5 minutes or just until cheese is melted. Serve quesadillas whole, or cut each into 3 wedges, beginning cuts from center of folded sides.