
Preheat oven to 375°F (190°C). Grease and sugar a 6-cup soufflé dish.
Melt chocolate and butter in a double boiler or microwave.
Whisk egg yolks and sugar until pale and thick. Stir in melted chocolate.
Beat egg whites with salt until stiff peaks form. Gently fold into chocolate mixture.
Pour batter into prepared dish. Bake for 20-25 minutes, or until puffed.
Dust with powdered sugar and serve immediately.
Serve it warm. Enjoy!