Step 1

Line a 9-in. pie plate with foil; set aside. In a large heavy saucepan, combine the chocolate chips, cream and shortening; cook over low heat until chips are melted. Stir in walnuts. Pour into prepared pie plate; spread evenly over bottom and sides of plate. Refrigerate for 1 hour or until set.

Step 2

In a large heavy saucepan, combine the marshmallows, milk and salt; cook over low heat until marshmallows are melted, stirring occasionally. Remove from the heat; stir in creme de menthe and creme de cacao. Refrigerate for 1 hour or until slightly thickened.

Step 3

Carefully remove foil from chocolate crust and return crust to pie plate. Fold whipped cream into filling; pour into crust. Refrigerate overnight. Garnish with chocolate curls if desired.