Dessert should be sweet, but adding a bit of savoury in there can keep you from experiencing sugar burnout. Swapping out the cookies in an ice cream sandwich for a good, chewy piece of bread makes it less one note, while still being firmly dessert.
Watermelon sprinkled with a little sea salt is one of my favourite summery flavour combinations -- and I thought I was super fancy when I paired it with feta -- but this watermelon "poké" from Bon Appetit takes the sweet + savoury factor to a whole new place.
I love ginger, and use it in every dish I possibly can, both sweet and savoury. I thought I knew all the ginger tricks -- I even make my own sushi ginger -- but there was one preparation that was missing from my life: roasted ginger.