Instructions: Combine butter and light-brown sugar in the bowl of an electric mixer; beat on high speed with the paddle attachment until fluffy, 2 to 3 minutes. Add the egg and vanilla, and mix to combine. Add flour and salt, and mix on low speed until flour is incorporated.

Roll dough into three 1 1/2-inch-diameter logs. Wrap in plastic wrap, and refrigerate until firm, at least 1 hour or overnight.

Heat oven to 350 degrees. Line baking sheet with parchment paper or a baking mat. Roll cookie log in sugar, coating them evenly, and slice into 1/4-inch rounds. Place cookies on baking sheet about one inch apart. Using a cake tester or toothpick, make four decorative holes in each cookie. Bake for 15 to 20 minutes, until golden brown. Remove from oven, and let cool completely on wire racks.

This recipe yields about 5 dozen cookies.

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