Posted by request. I found this recipe from Ina Garten online and made it for Joel’s birthday cake. It is silky, velvety, satiny smooth and oh so peanut buttery. David made a dark chocolate cake that we frosted with this and It was a huge hit with our family. It is reminiscent of Amy’s Peanut Butter Mousse but I thought it was different enough to warrant its own post and it makes just enough to generously frost one two-layer cake.
1 cup confectioners' sugar
1 cup creamy peanut butter
5 tablespoons unsalted butter, at room temperature
3/4 teaspoon pure vanilla extract
1/4 teaspoon kosher salt
1/3 cup heavy cream
With an electric mixer, mix together first five ingredients until creamy, scraping the sides of the bowl as necessary. Add the heavy cream and mix on high until light and smooth.
I went kind of easy on the filling between the two layers because I was unsure of how much frosting the cake would need but I could have added a more. No matter, what was left over was quickly devoured by my children so not a bit of it was wasted. This is going to be a new family favorite.