This sweet and salty salted caramel buttercream frosting pairs rich and buttery salted caramel sauce with silky smooth buttercream frosting for the best caramel frosting!
In the bowl of a stand mixer using the paddle attachment (or in a large bowl using an electric hand mixer), beat butter on medium-high speed until smooth. Add vanilla and beat on medium-high speed until blended.
Add sugar slowly – one cup at a time – beating well on medium speed and scraping the bowl often. When all sugar is added the frosting will be slightly dry.
Add milk and beat on high speed until the frosting is light and fluffy.
Add caramel sauce and beat on medium-high speed until well blended and fluffy.
Notes
Storage: Store frosting in an airtight container in the fridge for up to a week. If you plan to refrigerate the frosting before using to decorate a dessert, let the frosting come to room temperature and briefly re-whip it with a stand mixer or handheld electric mixer so that it's soft and fluffy before using.Cakes or other desserts that have been decorated with salted caramel buttercream frosting can be stored on a covered cake plate or stand at room temperature for up to 3 days.