Melt the caramel paste in the microwave for 20 seconds and stir in the salt until dissolved. Allow to cool completely.
In the bowl if a stand mixer, combine the dark chocolate mousse mix and milk with a whisk attachment. Whip on high speed for 3 to 5 minutes.
Pipe the Salted Caramel on the bottom of each tartlet, and then pipe the Chocolate Mousse on top using an open round tip. Garnish with a caramel decoration or as desired.
