Slice rolls in half horizontally, leaving the rolls attached. Spread the cut side of the top half with mayonnaise. Layer turkey and cheese on the bottom half. Replace the top half of rolls and arrange in a 13 x 9-inch disposable aluminum pan coated with cooking spray.
In a small saucepan, melt butter with brown sugar.
Stir in Worcestershire sauce, Dijon mustard, onion flakes and poppy seeds. Bring to a boil. Pour evenly over rolls.