In a medium pot melt the butter over low/medium heat, whisk in the sugar, cocoa and the vanilla until smooth. Remove from the heat and slowly add the beaten egg, whisking quick and hard, place the pot back on the heat (low/medium) and continue to cook for approximately two minutes or until the mixture thicken and is smooth.
In a small bowl whisk together the crumbs, coconut, chopped nuts and salt.
Remove from the heat and stir in the crumb mixture, combine well. Press the mixture into a lightly greased and floured 8 inch square pan. Chill while making the 2nd layer.
SECOND LAYER
In a medium bowl whisk together the powdered sugar and custard powder, add the cream and butter and beat until fluffy. Spread over the 1st layer. Refrigerate 1 hour to set.
THIRD LAYER
In a medium pot melt together the butter, milk and chopped chocolate until smooth. Let cool, then spread evenly over the 2nd layer. Refrigerate for at least 1 hour or until firm. Cut and serve. Enjoy!
Notes
How to store Nanaimo Bars?
Keep them covered in the refrigerator, where they’ll stay fresh for up to 1 week or freeze in a single layer, then transfer to an airtight container with parchment between layers. They’ll keep for up to 3 months. Thaw in the fridge before serving.