2Tablespoonsbuttermelted, to brush on tops after baking
Preheat oven to 450-degrees. Prepare baking sheets by lightly greasing them or using parchment or baking mats.
Combine the dry ingredients: flour, baking powder, baking soda, and salt. Gradually cut the butter into the flour mix, using a pastry blender or forks until it resembles coarse meal.
Add the buttermilk and combine until it just comes together. Don't overwork it! The butter needs to stay in small lumps; that creates the flaky layers.
Lightly flour about a square foot of counter. Press the dough out to mostly fill the space, with the dough still about 3/4-inch thick. Use a 3-inch round biscuit cutter to punch out shapes and place on baking sheets. Brush a little bit of milk on the tops of the biscuits.
Bake for 12 to 15 minutes or until they turn golden brown. Remove from oven and immediately brush melted butter on the tops.