See the post above for more recipe details and to watch the video making this easy chocolate mousse. The key to making this recipe successful is to make sure to not overheat the chocolate morsels too much. Microwave them just enough so that the chocolate chips melt and if they're too hot, just allow it to cool before adding the whipped topping. You won't want to have chocolate liquid melting down the whipped topping too much. And secondly, you've gotta be patient and let the mousse chills completely.