1 stick butter
3/4 c. sugar
1 oz. pkg. unsweetened chocolate baking bar
1 tsp. vanilla
2 eggs
8 oz. Cool Whip
Hershey bar shavings
1 prebaked pie shell

Cream butter, add sugar, chocolate baking bar and vanilla. Cream together. Add 1 egg and beat for 5 minutes. Add second egg and beat for another 5 minutes. Pour into prebaked pie shell. Chill at least 2 hours. Top with Cool Whip and sprinkle Hershey bar shavings on top of Cool Whip.