Hot answers tagged sandwich
I would personally wait with assembling it until right before eating. Put the bread in a bag, the sliced chicken in a bag, and find a small container to keep the pesto in. Then you can assemble and heat on "grill" for a minute or so when you're ready to eat it. That should prevent any sogginess.
smoked Havarti and marbled cheddar are great for grilled cheese sandwiches
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