In a medium bowl, whisk together the flour, baking soda, nutmeg, and salt. Set aside.
In a large bowl, cream together the butter, granulated sugar, and brown sugar until light and fluffy. Beat in the eggs, one at a time, then stir in the vanilla.
Gradually add in the flour mixture and stir until just combined. Stir in the oats and raisins.
Drop dough by rounded teaspoonfuls onto ungreased baking sheets. Bake for 10 to 12 minutes in the preheated oven, until lightly golden.
Allow cookies to cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.
Interesting Facts
Oatmeal cookies are believed to have originated in Scotland.
Raisins were added to the recipe in the late 19th century.
Oatmeal raisin cookies are one of the most popular varieties of cookies.
These cookies can be stored in an airtight container for up to two weeks.