Classic American Chocolate Chip Cookies vs Mousse au Chocolat: Velvety French Chocolate Delight

Both desserts lean on butter, sugar, eggs and chocolate, yet they use them in very different ways. The cookies cream butter with white and brown sugar, add vanilla and a single egg, then bake into rounds with golden edges and slightly soft centers, studded with semi-sweet chocolate chips. The mousse melts 70% dark chocolate with butter, whisks sugar into four yolks and folds in stiffly whipped whites before chilling until set. One is a soft-centered baked treat; the other a chilled, deeply chocolatey dessert that stays light and airy.