Nanaimo bars get their name from Nanaimo, British Columbia, and they are indubitably Canadian by birth. But it’s unsurprising that these sweets, which consist of a layer of graham cracker and nut crust, a layer of pudding or buttercream frosting, and a layer of chocolate, gained popularity south of the Canadian border as well. And it was Seattle-based behemoth Starbucks, which has sold Nanaimo bars seasonally, that introduced them to the rest of America.