This Blueberry Cream Cheese Crumb Cake recipe is a decadent dessert that is perfect for special occasions. The cake is made with a layer of cream cheese and fresh blueberries, and is topped with a crumbly streusel topping. The Thermomix makes it easy to mix the batter and crumb topping, and the cake bakes up perfectly every time. Serve it warm with a drizzle of caramel sauce for an extra special treat.