01 -
In a bowl, combine brown sugar, mustard, and ketchup. Stir until fully incorporated.
02 -
Place ground beef in a large skillet over medium heat. Cook, breaking up the meat, until thoroughly browned. Drain off excess fat and return beef to the skillet.
03 -
Stir in either the prepared homemade sloppy joe sauce or the canned Manwich sauce. Simmer for 5 minutes, allowing flavors to meld.
04 -
Place a clean skillet over medium heat. Add vegetable oil and heat until shimmering.
05 -
Lay one flour tortilla in the heated skillet. Spoon a generous portion of the beef mixture onto the tortilla. Sprinkle with grated muenster cheese and place a second tortilla on top.
06 -
Cook the assembled quesadilla for 3 to 4 minutes, pressing gently, until the underside is golden brown.
07 -
Carefully flip the quesadilla and continue cooking for another 3 to 4 minutes, until the second side is browned and cheese is thoroughly melted.
08 -
Repeat assembly and cooking steps with remaining tortillas, beef mixture, and cheese.
09 -
Cut each quesadilla into wedges and serve immediately while hot.