Melt the Chocolate: In a small saucepan or microwave-safe bowl, gently melt the chocolate. Stir in the maple syrup and vanilla. Let cool slightly.
Whip the Cream: In a medium bowl, whip the coconut cream or heavy cream until soft peaks form. Set aside.
Whip the Egg Whites: In a separate clean bowl, beat the egg whites (or aquafaba) with a pinch of salt until stiff peaks form.
Combine: Fold the whipped cream into the cooled chocolate mixture until just combined. Then gently fold in the beaten egg whites, being careful not to deflate the mousse.
Chill: Spoon the mousse into individual ramekins or jars. Chill in the refrigerator for at least 1 hour or until set.
Serve: Garnish with a dusting of cocoa powder, a few berries, or a dollop of coconut whip.