3 chicken caramelized onions cheese quesadillas Recipes

olive oil, presliced mushroom, sliced onions, salt, fresh ground black pepper, crushed red pepper flakes (or more if you choose) (optional), brown sugar (or two), minced fresh garlic or 2 tsp bottled minced garlic, sherry wine or 1 tbsp red wine vinegar, fat-free flour tortillas, shredded cooked chicken breast (about 8 oz), arugula (we used the spinach) or 1 cup baby spinach (we used the spinach), shredded gruyere cheese or 1/4 cup swiss cheese, jalapeno cheddar cheese (we used both rondele spreadable cheeses) or 1/4 cup horseradish cheddar cheese, divided (we used both rondele spreadable cheeses)

skinless chicken thighs, on the bone, extra virgin olive oil, chopped rosemary, garlic cloves, minced, kosher salt, unsalted butter, onions, thinly sliced, chopped thyme, sherry wine vinegar, sugar, fresh ground pepper, flour tortillas, blue cheese, crumbled