Chocolate Deluxe Pie

• 1 can (14-oz) sweetened condensed milk
• 2 squares (1-oz) unsweetened chocolate
• 1/4 tsp salt
• 1/4 cup hot water
• 1/2 tsp vanilla extract
• 2 cups whipped topping
• 1 graham cracker pie crust
• Whipped topping

In top of double boiler, combine condensed milk, chocolate and salt. Cook over boiling water, stirring constantly, until very thick. Gradually stir in water. Cook 2-5 minutes, stirring until mixture thickens again. Remove from heat; stir in vanilla. Cool to room temperature. Fold in whipped topping; pour into crust. Chill. Garnish with shaved chocolate or nuts, if desired.