This caramel frosting has a very nice flavor and is good for frosting cupcakes or a cake.
Use a heavy saucepan.
Pour in the heavy cream and brown sugar, and using medium heat, bring to a rolling boil for one minute.
Add the baking soda and boil one minute.
Remove from the heat. Add the butter, DO NOT STIR.
Let the mixture cool then using an electric mixer beat until nice and creamy smooth.