Crassula exserta is a herb in the family Crassulaceae that is native to Western Australia.
The succulent annual herb has an erect to decumbent habit and typically grows to a height of . It blooms between August and December producing white-yellow-pink-red-brown flowers.
It is commonly found among granite outcrops, around swamps in depressions and around saline mud flats in the Great Southern, Wheatbelt, Mid West and Goldfields-Esperance regions.