Preheat the oven to 425°F and lightly coat a 9x9 baking dish with non-stick spray or oil.
In a large bowl, mix together the blueberries, coconut sugar, lemon juice, vanilla extract, and tapioca flour. Pour into the prepared pan and set aside.
In a medium bowl, whisk together the gluten-free flour blend, coconut sugar, baking powder, salt, and cinnamon.
Add the cold butter to the flour mixture and mix with your hands or a fork until crumbly. Set aside.
In a small bowl, whisk together the almond milk and egg, then pour into the flour mixture. Mix until just combined.
Using a large cookie scoop, drop spoonfuls of the biscuit dough over the blueberries and flatten slightly with the back of a greased spoon.
Cover with foil and bake for 20 minutes. Remove the foil and bake for an additional 25 minutes or until the biscuits are golden brown and firm to the touch.
Let cool for 5-10 minutes before serving with vanilla ice cream or whipped cream.