"Edible glitter" refers to a type of decoration or sprinkle that can be eaten because it is made from edible ingredients. It adds a shiny, colorful, and sparkly appearance to food. Full definition
I am pretty obsessed with edible glitter dust. (sotherebyamy.com)
Adding edible glitter to the rolling sugar makes these stand out on any Holiday cookie tray. (styleathome.com)
If you don't mind a touch of edible glitter then you can sprinkle some over your donuts for an additional space like sparkle, which is what I did (obviously!). (greensofthestoneage.com)