Beat together the cream cheese until creamy and smooth using a handheld mixer in a medium mixing bowl.

Slowly mix in the cocoa powder.

Beat in the avocado and mix until creamy smooth, approximately 5 minutes.

Add the vanilla extract and sweetener and beat again until smooth, approximately 1-2 minutes.

In a separate mixing bowl, whip the heavy cream until stiff peaks form.

Place the whipped cream in the chocolate mixture and gently fold until it's incorporated.

Place the chocolate mousse in a piping bag and pipe into desired containers.

Garnish with dark chocolate shavings