Ingredients Jump to Instructions ↓

  1. 16 oz 454g Semisweet chocolate

  2. 3/4 cup 148g / 5 1/5oz Butter

  3. 3/4 cup 148g / 5 1/5oz Powdered sugar

  4. 1 tablespoon 15ml All-purpose flour

  5. 4 tablespoons 60ml Egg yolks (large)

  6. 1 1/2 teaspoons 7 1/2ml Vanilla

  7. 4 teaspoons 20ml Egg whites - room temperature (large)

  8. 1 cup 237ml Sour cream

Instructions Jump to Ingredients ↑

  1. In large saucepan, melt chocolate and butter together, then gradually add sugar and flour, stirring constantly with wire whisk. Add egg yolks, one at a time, mixing well after each.

  2. Stir in vanilla. Beat egg whites until stiff peaks form and fold into chocolate mixture. Pour all but 1 cup of mixture into buttered 8x8-inch pan. Add 1 cup sour cream to reserved 1 cup batter and spread evenly over top of mixture in pan.

  3. Bake at 375F for 25 minutes. The center will not look done or set. Cool completely, cover and refrigerate for 4-6 hours. Cut into 1 1/2 inch squares with a hot knife. Individual pieces can be wrapped and frozen.


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