DR Jennifer, you can likely find many dessert recipes for diabetics on the internet.
Along with sugar, diabetics must take care with carbs in general.
It is a good idea to make sure there are some foods such as meats, cheeses, vegis there for the diabetics to chomp on.
Crackers, cakes, cookies are things they would have to avoid, but certainly you can have them the other guests.
I tend to take my own food where ever I go, just in case.