These Pumpkin Blueberry Crumb Cake Cupcakes are perfect treats to transition into the autumn season! Ripe August Blueberries are folded into a lightly spiced pumpkin cupcake. The cupcakes have a crumb cake crust, crumb cake topping, and crumb cake cookie dough filling, and are garnished with more crumb cake crumbles. Better yet, these Pumpkin Blueberry…