For Caram Sauce

1. In a heavy-bottom saucepan, add sugar and heat until it melts and turns amber in color.
2. Warm fresh cream in a microwave. And pour this into the amber-colored sugar while stirring it. 
3. Once all the cream is incorporated, add butter and salt, then mix properly.
4. Transfer it to a bowl and set it aside to cool down completely.

For Frosting

1. In a big bowl, beat unsalted butter with an electric hand beater until the butter is fluffy in texture.
2. Add in the cooled caramel sauce and beat again until you get soft peaks in the frosting.