Silky Cream Cheese Icing

Why This Silky Cream Cheese Icing Works

Soft cream cheese and butter are beaten together first so they blend into one smooth base. When both are at room temperature, the fat is soft enough that no little lumps hang around, so the icing starts out silky instead of grainy. As the mixer runs, air gets worked into the fat, so the mixture starts to look a bit lighter and fluffier even before the sugar goes in.

Once the powdered sugar goes in slowly, it doesn’t clump. The fine sugar grains spread through the soft fat and start to thicken it, so the icing firms up and can hold soft peaks. Adding the sugar in stages keeps it from packing down and turning heavy. Near the end, vanilla and a tiny bit of salt spread through the icing and take away that flat, overly sweet taste. When the mixer speed goes up for a couple of minutes, more air is whipped in, so the icing stays thick enough to spread but still feels light and smooth on the cake.

Mistakes To Avoid

Starting with cold cream cheese or butter often leaves small lumps that never fully beat out. The icing then looks grainy and dotted instead of smooth, and those bits can clog piping tips or leave rough streaks on a cake.

Dumping all the powdered sugar in at once tends to create a thick paste that’s hard to smooth out. The mixer has to work much harder, pockets of dry sugar stay in the bowl, and the icing can end up dense instead of light and silky.

Beating on high speed from the beginning can warm the butter and cream cheese too much. Once they get too soft, the icing turns loose and soupy, and it won’t hold swirls or stay put on cupcakes.

Skipping the salt or adding a lot more than listed throws off the balance of the icing. With no salt it tastes flat and overly sweet, while too much makes it taste oddly sharp and can leave a salty aftertaste that lingers.