Melt the chopped chocolate in a double boiler over simmering water, stirring until smooth. Remove from heat and let cool slightly.

In a mixing bowl, whisk the egg yolks and sugar until pale and creamy. Gradually add the melted chocolate and vanilla extract, mixing until well combined.

In another bowl, whip the heavy cream until soft peaks form. Gently fold the whipped cream into the chocolate mixture until fully incorporated.

In a bowl, combine sliced strawberries with granulated sugar. Let sit for about 10 minutes to macerate.

Spoon the chocolate mousse into serving cups, filling them about halfway.

Top the mousse with the macerated strawberries.

Finish with a dollop of whipped cream and sprinkle chocolate shavings on top.