Preheat oven to 425°F and spray an 8-inch pie pan with nonstick cooking spray.
In a large bowl, whisk together the flour, baking powder, baking soda, sugar, and cinnamon.
Add the butter to the flour mixture. Using a pastry blender, cut the cold butter into smaller cubes, incorporating them into the flour mixture until it resembles coarse crumbs.
Pour in buttermilk. Stir until a dough forms.
Transfer the dough to a floured surface. Using your fingers, press dough down into a flat square about 1-inch thick. Using a round cutter (I used a 3-inch round), cut dough into rounds and transfer to the prepared cake pan. Bring together any leftover dough scraps and repeat. I was able to make 6 biscuits.
In a small bowl, combine sugar and cinnamon. Sprinkle over the biscuits. Bake for 18-20 minutes, or until golden. Let cool slightly in the pan before serving.
In a medium bowl, combine butter, confectioners' sugar, honey, and cinnamon. Serve with warm biscuits.
