Add the cassava flour, coconut flour, baking soda, and sea salt into a large bowl and whisk to combine.
Whisk the wet ingredients in a separate bowl and add to your dry. Once it starts to thicken up, continue mixing by folding the mixture together with a spatula. Let the dough sit for a few minutes.
Place 6 large dollops of batter onto a parchment paper lined baking sheet. Use your hands to press them into small disc shapes. Bake the biscuits at 350 F for about 15 minutes.
Remove them from the oven, and let cool while you chop the strawberries.
Assemble the shortcakes by adding coconut whipped cream and strawberries in the middle of each biscuit.