French Silk Pie
["1/2 c. butter", "3/4 c. sugar", "1 sq. unsweetened chocolate, melted and cooled", "1 tsp. vanilla", "2 eggs"]
["Cream butter; add gradually sugar; mix well.", "Blend in chocolate; add vanilla.", "Add eggs, one at a time, beating 5 minutes after each addition.", "Turn into cooled, baked pie shell.", "Chill 1 to 2 hours before serving with whipped cream and walnuts."]
["butter", "sugar", "unsweetened chocolate", "vanilla", "eggs"]