Preheat the oven to 425F and prepare a 9x9 baking dish by lighting coating it with your favorite non-stick spray or oil.
Then, in a large bowl mix together the frozen blueberries, coconut sugar, lemon juice, vanilla extract and tapioca flour. Pour into the greased pan and set aside.
In a medium bowl, combine 1:1 gluten free flour blend, coconut sugar, gluten free baking powder, salt, and cinnamon. Whisk until ingredients are well incorporated.
Add in the cold butter and mix with your hands or a fork (I prefer my hands, it's much faster). The mixture should be crumbly. Set aside.
In a small bowl, whisk together the almond milk and egg and then pour this mixture into the dough. Mix with a spatula until ingredients just combined.
Using a large cookie scoop, grab the dough and drop it over the blueberries and flatten slightly with the back of a greased spoon.
Cover with foil and bake for 20 minutes, then remove the foil and bake for 25 minutes or until the biscuits are golden brown and firm to the touch.
Let cool for about 5-10 minutes before serving with vanilla ice cream or whipped cream.