adapted from Smitten Kitchen

1/2 cup butter, softened

2/3 cup light brown sugar, packed

1 egg

1 teaspoon vanilla

3/4 cup all purpose flour

1/2 teaspoon baking soda

1 teaspoon cinnamon

1/4 teaspoon salt

1 1/2 cup oats

3/4 cup raisins

Preheat oven to 350.  Line a baking sheet with parchment paper.  

In a large bowl, cream together the butter, sugar, egg and vanilla until smooth.  In a separate bowl, whisk together the flour, soda, cinnamon and salt.  Stir the dry ingredients into the wet until combined.  Stir in the oats and raisins.  

Chill the dough for 30 minutes.

Scoop by the tablespoon onto the baking sheet.  The cookies will not expand much.  Bake for 12 minutes.  Let cool on the baking sheet for 5 minutes.  Then transfer cookies to a rack to cool.