Can be prepared in 45 minutes or less.

Ingredients

　　2 1/2 tablespoons unsalted butter, cut into bits

　　1 large egg

　　1/4 cup sugar

　　1/2 teaspoon vanilla

　　2 tablespoons all-purpose flour

　　1/2 cup chopped walnuts

　　coffee ice cream as an accompaniment

　　Butter and flour an 8-inch round cake pan. In a small metal bowl set over barely simmering water melt 3/4 cup of the chocolate chips and the butter, stirring until the mixture is smooth. In a bowl whisk together the egg, the sugar, and the vanilla until the mixture is foamy, whisk in the chocolate mixture and a pinch of salt, whisking until the mixture is smooth, and fold in the flour, the remaining 1/4 cup chocolate chips, and the walnuts. Spoon the batter into the pan, spreading it evenly, and bake the torte in the middle of a preheated 350°F oven for 15 to 20 minutes, or until a tester comes out clean. Transfer the torte to a rack, let it cool for 10 minutes, and serve it warm, cut into wedges, with the ice cream.