Make the Topping
Preheat oven to 350°. Butter and flour a cookie sheet and set aside. Place butter, salt, confectioners' sugar and vanilla in mixer and mix until fluffy. Add flour and pecans and mix by hand until a dough forms. Be careful and do not overmix or dough will toughen. Chill dough for 1/2 hour or overnight. Roll dough out to 1/4-inch thickness and cut out 4-inch disks. Bake them on prepared sheet for 10 to 12 minutes or until golden brown.