Follow this recipe tutorial at home to make the best ever, fluffy caramel buttercream frosting for cakes and cupcakes. What's the secret to fluffy buttercream frosting? Nailing ingredient ratios! Using a stand mixer or hand-held mixer, this caramel frosting is easy to whip-up in 5 minutes. Both store bought and homemade caramel sauce work well here.
In the bowl of a hand or stand mixer fitted with the paddle attachment, cream the butter for 1 minute. Stop the mixer and add in the confectioners sugar. Start with the speed on low and work up to medium speed. Beat for 2 minutes.
Scrape down the mixer. With the mixer running on low, add the caramel sauce in a steady stream. Add the milk and salt and beat for 3 minutes.