1/2 c. butter
3/4 c. sugar
1 sq. baking chocolate
1 tsp. vanilla
2 eggs

Cream butter and slowly add sugar. Blend in chocolate, which has been melted and cooled, and vanilla. Add eggs 1 at a time, beating 5 minutes after each one (very important). Pour into baked pie shell or graham cracker crust and chill 1 to 2 hours. Garnish with whipped cream and shaved chocolate or nuts.