Then you do have to use your stovetop. But it’s a simple affair, and really no big deal. Whisk together some sugar and eggs and cook until the mixture is thick enough to coat the back of a spoon…
… Then pull it off the heat and stir in the melted chocolate and vanilla.
Let it cool and while it does, beat your butter in a separate bowl until it’s nice and fluffy. Add the cooled chocolate mixture and beat until it’s light and fluffy too. Whip up some whipped cream, and fold part of it into the chocolate mixture for some nice airiness but save most of it for the top.
