1. In a medium-sized saucepan, combine all nougat ingredients besides the marshmallow and caramel creams. Stir over low heat until mixture is melted and smooth. Add marshmallow fluff and stir until it is heated through and well combined.
2. Pour nougat layer over crust and refrigerate until cold and nougat has hardened somewhat.
3. Stir caramel cream to soften, smooth over nougat filling.