In the bowl of a stand mixer, blend butter and sugar until just combined. Mix in the vanilla.
Blend together flour, salt, and spices in a separate bowl. With the mixer on low, add the flour mixture to the butter, mixing until a dough starts to form.
Divide and roll dough into 2 8-inch logs. Wrap in plastic wrap or waxed paper and freeze.
Preheat oven to 375 degrees. Unwrap frozen dough and cut into ½-inch rounds. Place on parchment-lined baking sheet and bake for 15-18 minutes until the edges begin to brown. Cool slightly before removing from pan to wire rack. Makes about 3 ½ dozen cookies.