Crisp tortillas filled with gooey melted cheddar and shredded chicken in a sweet and smoky chipotle sauce — these are the best quesadillas! The recipe is adapted from the website of Curtis Stone, one of my favorite chefs and cookbook authors. What gives these quesadillas such distinctive flavor is the canned chipotle peppers in adobo sauce. They’re small peppers (usually red jalape??os) that have been dried and smoked, and they come in a spicy, smoky tomato sauce.