Washboard cookies are like a lightly spiced sugar cookie. They get their name from the use of a fork to create light hashmarks on their surface before baking them.
Preheat the oven to 350 degrees. Prepare a couple baking sheets by lining them with parchment paper, and set them aside.
In a large mixing bowl, beat the butter and sugar for a couple of minutes until the mixture is light yellow and airy.
Beat in the vanilla.
Next, beat in the flour, baking powder, salt and cinnamon until everything is well combined.
Using your hands, roll the dough into one-inch balls. Put some sugar in a small bowl, and roll the balls in the sugar. Place them about two inches apart on the prepared baking sheets.
Use a fork and make a crosshatch pattern on each ball, pressing down gently.
Bake for 12 to 15 minutes or until the edges are lightly browned. Let them cool for about five minutes, and then transfer the cookies into an airtight container.