A variety of sauces can be paired with a Monte Cristo sandwich. I highly recommend honey mustard, ranch dressing, and Thousand Island dressing.  Another option is a raspberry or strawberry jam, which helps offset the sandwich's richness. For something a bit more indulgent, consider pairing the Monte Cristo with a creamy brie or hollandaise sauce. Other sauces that would pair well with this sandwich include BBQ sauce, hot sauce, and ketchup. Get creative and try out different flavors to find your perfect match!