This vegan blueberry crumb cake recipe is made with a food processor for easy preparation. The cake is moist and tender, with a sweet and tangy blueberry filling and a crunchy streusel topping. The streusel is made with flour, sugar, vegan butter, and cinnamon, and is mixed in the food processor until it forms coarse crumbs. The cake batter is also made in the food processor, with flour, sugar, baking powder, salt, vegan butter, non-dairy milk, and apple cider vinegar. The blueberries are folded into the batter and the streusel is sprinkled on top before baking. This cake is perfect for those who are vegan and want to enjoy a delicious blueberry crumb cake.