This paleo blueberry crumb cake recipe is perfect for anyone who follows a paleo diet. The cake is made with almond flour and coconut sugar, which gives it a nutty and sweet flavor. The blueberry filling is made with fresh blueberries and a touch of honey. The crumb topping is made with almond flour and coconut oil. This cake is moist, flavorful, and perfect for anyone who wants to enjoy a paleo dessert.