This cinnamon blueberry crumb cake recipe is perfect for those who love a warm and spicy flavor. The cake is made with cinnamon and nutmeg, which gives it a warm and spicy flavor. The blueberries add a burst of sweetness and color to the cake. The crumb topping is made with cinnamon and brown sugar, making it crunchy and delicious. Serve it with a cup of hot apple cider or coffee for a perfect fall dessert.