Place chocolate into TM bowl and mill 5 seconds x speed 9 (if there are still some large pieces, then repeat 2 seconds x speed 9)
Scrape around sides, then melt 6 minutes / 50 degrees / speed 3 (pause and scrape after 3 minutes if chocolate is not melting uniformly … you want it to be completely melted so keep going until it is all liquid … if after 6 minutes it still has some small lumps, scrape around bowl and melt for another minute until smooth)
Set aside, do not clean TM bowl
Add butter, cream cheese, vanilla extract and salt to TM bowl and mix 10 seconds / speed 5, scrape around bowl and repeat 5 seconds / speed 5
Add icing sugar first to the TM bowl, then place melted chocolate on top
Mix 15 seconds / speed 10, scrape around bowl and repeat 10 seconds / speed 10, scrape around bowl and repeat for a final 2 seconds / speed 10
Use as desired (please see "Notes")