Beat butter and sugars.
Add egg and vanilla.
Add dry ingredients.
Measure out 6 ounce mounds and shape into 2 pretty even ball-bottom should be pressed into a slight disk and then I did a round ball on top. Freeze until solid.
Lay on parchment lined jellyroll pan and sprinkle tops with crumbs. Can push a small indent with your finger on the cookie top to hold more crumbs. Also attach some crumbs to the sides.
Bake at 400 degrees for 12-16mins.
(During the last 2 mins of baking can add a little more crumb in the empty spots.)
Should be slightly underdone as they will cook more as they cool on cookie sheets.
Dust with powdered sugar when cool.
