Preheat oven to 425.
In a large bowl, mix together flour and sugar.
Make a well in the middle of the flour and add buttermilk, egg, softened butter and water. Mix until just combined. Do not overmix.
Add cold pieces of butter and mix a few more times until combined.
Grease solid surface and roll dough out to 1 1/2" thickness. Using biscuit cutter, cut out biscuits and place on greased cookie sheet.
Bake for 12-15 minutes.
Serve warm with butter.