A rich gluten-free chocolate cookie crumb base mixed with sweet shredded coconut, crunchy salted cashews, and vegan butter. Whipped, fluffy, and totally dreamy, the middle layer is a sweet mint buttercream frosting. The third, and final layer to these beloved mint nanaimo bars is the thin decadent top coating of vegan chocolate. Put all three parts together and you have the most amazing holiday mint nanaimo bars that are both vegan and gluten-free.