@kinsol - I visited Nanaimo as a kid after spending a week on Campbell River fishing. One year in Olympia then three plus in PDX.
Tiger nut flour is an interesting choice for the base but I can taste - toasted - almond meal in this recipe. There's a post elsewhere in Ask TCL about using a small wet grinder like the kind used to refine chocolate to make coconut butter from fresh grated coconut. Will take longer but would result in a different texture.
@DiscoverChoc I hear you! I grew up in Nanaimo. I prefer almond meal for the base. Note that the recipe calls for coconut butter/manna (puréed coconut), not oil. Nutiva sells it, or you can make it yourself with a Vitamix. bon appetite.
@kinsol - Thanks for sharing. I think I ate my weight in Nanaimo bars when I lived in the PacNW.