This sandwich is best enjoyed immediately after cooking. If storing, wrap tightly in foil and refrigerate for up to 24 hours. Reheat in a 350°F oven for 5-7 minutes or in a skillet over low heat until warmed through. Avoid microwaving as it may make the bread soggy.
Keyword Balsamic Glaze, Blackberries, Comfort Food, Grilled Cheese