Preheat the oven to 350 degrees F (177 degrees C). Line a baking sheet with parchment paper.
Mix dry almond flour, baking powder, and sea salt together in a large bowl. Stir in whisked egg, melted butter, and sour cream, if using (optional).
Scoop tablespoonfuls of the dough onto the lined baking sheet (a large cookie scoop is the fastest way). Form into rounded biscuit shapes (flatten slightly with your fingers).
Bake for about 15 minutes, until firm and golden. Cool on the baking sheet.
