French Silk Chocolate Pie
["1 c. butter or margarine", "1 1/2 c. sugar", "4 sq. melted chocolate", "2 tsp. vanilla", "4 eggs", "2 (8-inch) or 1 (10-inch) baked pie shell"]
["Cream butter;", "gradually mix in sugar.\tBlend in chocolate and vanilla.", "Add", "eggs", "1", "at\ta time, beating 5 minutes after each addition.", "Pour into shells; chill at least 1 hour."]
["butter", "sugar", "chocolate", "vanilla", "eggs", "shell"]