A batter made with nutmeg and cinnamon gives Union Square Donuts’ Apple Cider Cake Donut an extra helping of autumnal goodness. After frying, it gets dusted with cinnamon and clove sugar. Find it at USD locations in its namesake Somerville square, Assembly Row, Brookline, Time Out Market, and Boston Public Market (and stay tuned for a Harvard Square shop to open this fall!). Along with the seasonal specialty, this top Boston doughnut shop stocks plenty more appley goodness throughout fall, from Apple Crisp a la Mode in doughnut form to Vegan Chai Apple Cider doughnuts.