Preheat oven to 450 degrees F and line a sheet pan with parchment paper or silicone liner.
In a large bowl, add flour, baking powder, and kosher salt. Whisk to combine.
Add cold butter into the flour and toss to coat each butter piece. Using a pastry blender blend the butter into the flour until the flour has pea sized pieces of butter throughout.
Mix in the rosemary and thyme.
Pour in the milk and stir to combine. The mixture will be very sticky.
Flour your counter and add the dough to the dough to the counter. Add a little flour on top of the dough and flour your hands.
Knead the dough about 10 times to bring it together. If it's too sticky add a bit more flour to the top until you can work the dough into a rectangle that is 1-1/2 inch thick.
For my biscuits, I use a sharp knife and cut them into eight pieces, but you can use a biscuit cutter if you want.
Add biscuits to your baking sheet, brush the tops with heavy cream and bake for about 10-15 minutes or until the tops are golden.