Sinful French Silk Pie
["1 (9-inch) pie shell (can be store-bought or made from scratch)", "1 c. butter", "1 1/2 c. Superfine sugar", "4 oz. unsweetened chocolate, melted and cooled", "2 tsp. vanilla", "4 eggs"]
["Beat butter and sugar until well blended, approximately 6 to 8 minutes, until mixture turns pale yellow.", "Blend in chocolate and vanilla.", "Beat in 1 egg at a time (approximately 3 minutes for each egg) on medium speed.", "Fill pie shell and refrigerate."]
["pie shell", "butter", "sugar", "unsweetened chocolate", "vanilla", "eggs"]