First of all, we should make Dark Chocolate Mousse and set it aside.
Take melted and cooled dark chocolate chips in a medium bowl and keep them aside.
Add 1 cup of heavy whipping cream, vanilla, and salt to a bowl.
Whisk the mix until you can see soft peaks.
Gently add the whipped cream that is folded into melted dark chocolate. See that you are not over-mixing it.
Shift the mixture into a large plastic bag or piping bag.
Get the serving glass dishes ready.
Now pour a 4 oz. of the mix kept in the piping bag to the bottom of each serving bowl.
Cover the serving dishes with a plastic wrapper. Refrigerate the dishes until it is chilled.
Now, we are going to make chocolate mousse layers.
Keep melted and chilled or cooled caramel chocolate mousse in a medium bowl and keep it aside. Now get the whipping cream ready for piping to the serving dish.
See that fine peaks are formed in the whipping cream.
Now add the whipping cream into the serving dish using another piping bag.
Repeat according to your need. You can make it multi-layered or double-layered.
Your mousse is ready.
Refrigerate them at least two hours.
Keep them in the refrigerator until you serve.
You can choose your own garnish. It can be sweetened whipping cream or additional leftover chocolate chips.