Wiktionary
butter cream
n. A thick, sweet icing of butter and sugar, used in cakes as a filling or coating.
Usage examples of "butter cream".
O sacred butter cream, O clear to slightly cloudy Sunday afternoon dusted with powdered sugar!
It was the pale one, its scales the color of butter cream, veined with whorls of gold and bronze, and Dany could feel the heat of it.
Layers of cake, coffee butter cream and thick chocolate granache went up into the barrel.