These cheesy quesadillas are perfect for a quick lunch or dinner. Start by browning ground beef in a skillet. Add diced onions, garlic, and canned diced tomatoes with green chilies. Simmer until the mixture thickens. Then, spoon the beef mixture onto tortillas and top with shredded cheese. Fold the tortillas in half and cook in a hot skillet until the cheese is melted and the tortillas are crispy.
