1 1/2 oz. unsweetened chocolate
1/2 c. water
2/3 c. sugar
8 tbsp. butter, room temperature
2 tsp. vanilla
1 c. all-purpose flour
3/4 c. sugar
1 tsp. baking powder
1/2 tsp. salt
1/2 c. milk
1 egg
1 unbaked 9 inch pie shell
1/2 c. walnuts, chopped

Preheat oven to 350 degrees. Melt chocolate with water in small saucepan over hot water, stirring frequently. Add 2/3 cup sugar. Remove from over water, increase heat to medium-high and bring to boil, stirring constantly. Remove from heat. Add 4 tablespoons butter and stir until melted. Add 1 1/2 teaspoons vanilla; set aside. Combine flour, 3/4 cup sugar, baking powder and salt in medium bowl. Add milk and remaining butter and vanilla and beat 2 minutes. Add egg and beat 2 more minutes. Pour batter into pie shell. Stir chocolate sauce and pour over batter. Sprinkle with nuts. Bake until tester inserted in center comes out clean, approximately 55 minutes. Serve warm or at room temperature with whipped cream.