16 oz. Semi-sweet chocolate

3/4 cup butter

3/4 cup powdered sugar.

1 tbsp. All-purpose flour

4 large Eggs yolks

1 1/2 tsp. vanilla

4 large Egg whites, room temperature

1 cup Sour cream


1. In large saucepan, melt chocolate and butter together, then gradually add sugar and flour, stirring constantly with wire whisk.

2. Add egg yolks, one at a time, mixing well after each.

3. Stir in vanilla.

4. Beat egg whites until stiff peaks form and fold into chocolate mixture.

5. 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. Bake at 375°F for 25 minutes.

6. The center will not look done or set. Cool completely, cover and refrigerate for 4-6 hours.

7. Cut into 1 ½ inch squares with a hot knife.

8. Individual pieces can be wrapped and frozen.