Preheat the oven to 425°F.
In a mixing bowl combine All purpose flour, baking powder, sugar and salt.
Next, grate in cold butter and coat the butter into the flour creating pea-like pieces with a fork.
Create a well in the center of the flour, carefully pour in the cold buttermilk and sour cream or greek yogurt if desired. Gently mix until the dough comes together.
Flour your hands well then sprinkle the top of the wet dough with more flour. Transfer it onto a well-floured surface. Gently bring the dough together, folding it over itself to create layers. The more folds, the more layers, so aim for at least 6 folds, shaping the dough into a 1 inch thick square. If the dough feels too sticky, add a bit more flour as needed.
Using a biscuit cutter or a mug, press straight down to cut the biscuits. Be sure to flour the cutter between each cut.
Place the biscuits in a greased cast iron skillet or oven safe baking dish and brush the tops with a little buttermilk
Bake on 425°F for 15-18 minutes or until golden brown.
For the honey butter, heat butter for about 20 seconds or until melted then mix in the honey and vanilla extract.
Remove biscuits from the oven and brush/ pour immediately with honey butter. Serve warm and enjoy!