Ok, you might try this, this is the one i make with the glass. (I got it in a magazine, like better homes or good housekeeping - don;t scoff at the source, they have some good recipies!) - and it was intended to have white chocolate drizzled on top and chopped pistachios sprinkled on top of that so they stick on the melted chocolate. But i think they;re good plain cookies as they are, the bit of sugar gets caramelized a little and they;re crisp and tasty.
Preheat oven to 350
1 1/2 cups flour
3/4 cups butter
1/2 cups powdered sugar
1/2 tsp salt
granulated sugar to roll the dough in later.
beat butter and powdered sugar till creamy. Beat in egg, then beat in flour.
Cover and chill one hour
Shape into 1/4 inch balls. Roll in granulated sugar. put on ungreased cookie sheets. Dampen or grease the bottom of a glass or other flat thing and dip in granulated sugar. press down the cookie, then redip in sugar and continue. Once pressed they don;t spread any more.
Bake about 8 min till the bottoms are slightly browned. Cool on racks.
These come out very slightly curved, very very slightly domed on top and hollow underneath, barely detectable, but nice.
I think you might also roll them out (like langues de chat) with a sugared rolling pin.
They;re buttery and crisp