This coconut blueberry crumb cake recipe is perfect for those who want a tropical and sweet dessert. The cake is made with coconut milk and shredded coconut, which gives it a nutty and slightly sweet flavor. The blueberry filling is made with fresh or frozen blueberries, lemon juice, and sugar, which gives it a tangy and sweet taste. The crumb topping is made with butter, flour, and sugar, which gives it a crunchy texture. This recipe is easy to make and can be served warm or cold, with a dollop of whipped cream or a scoop of coconut ice cream.