SPREAD one side of each slice of bread, with 1 tsp. barbecue sauce. Top 1 bread slice with 1 Kraft Single. Layer with bologna, tomato and remaining Kraft Single. Top with remaining bread slice.
SPRAY frypan with non-stick cooking spray. Add sandwich; cook on medium heat for 2 min. on each side or until golden brown.
SERVE with additional barbecue sauce for dipping.