Step 1

In a bowl of an electric mixer, cream the butter and brown sugar on high speed until light and fluffy, about 2 to 3 minutes.

Step 2

Add the egg and vanilla, mixing thoroughly.

Step 3

Gradually add the flour and salt. Mix on low speed until just combined.

Step 4

On three separate sheets of plastic wrap, roll the dough into three logs 1 1/2-inches thick. Wrap in plastic and refrigerate for at least one hour to overnight.

Step 5

When ready to bake, place a rack into the center of the oven and preheat to 350 degrees F.

Step 6

Prepare a cookie sheet by lining it with parchment.

Step 7

Remove one log from the fridge and roll it in the granulated sugar, making sure to coat it completely.

Step 8

With a sharp knife, cut slices 1/4-inch thick.

Step 9

Place the slices on the prepared cookie sheet 1-inch apart.

Step 10

Optional – with a toothpick, make 4 decorative holes in each cookie. SEE NOTE

Step 11

Bake for about 15-20 minutes, or until lightly golden brown.

Step 12

Transfer cookies to a wire rack so that they can cool completely.