The term "decadent frosting" typically refers to a rich, creamy and indulgent type of icing that is used to decorate cakes or other baked goods. It's often made with high-quality ingredients such as butter, sugar, eggs, and flavorings, resulting in a luxurious texture and taste. The word "decadent" implies extravagance and indulgence, which is reflected in the richness of this type of frosting.