Remove meat from chicken (discard skin and bones). Chop meat; reserve 2 cups. Cover and chill or freeze remaining chicken for another use.Advertisement
Spoon chicken evenly on bottom halves of tortillas. Top with spinach and mushrooms. Sprinkle cheese evenly over mushrooms. Fold tortillas in half.
Heat quesadillas on a griddle over medium heat until browned on both sides and cheese is melted. If desired, serve with salsa and guacamole. Makes 4 servings.