So simple, and oh so delicious!
½ C powdered sugar
1 C softened butter
2 C flour
1 tsp vanilla
Mix all ingredients thoroughly. Roll or press, cut into wedges or bars, etc.*
Bake 20 minutes at 315°.
* I don't have a shortbread mold, but I do have a 2" thistle stamp, so I roll mine into balls, then stamp them.