Substitute 5 hamburger buns for the tortillas.
Brown ground beef in same skillet; drain. Stir in onions, ketchup and barbecue sauce; cook on medium-low heat 4 min., stirring frequently. Add bacon and beans; mix well. Cook 8 to 10 min. or until heated through, stirring occasionally.
How to Reheat Filling
Refrigerate any remaining filling. To reheat, cook filling in saucepan on medium-low heat until heated through, stirring occasionally and moistening with additional barbecue sauce or ketchup, if necessary.