In a large bowl, cream together the butter, brown sugar, and white sugar until smooth. Beat in the eggs one at a time, then stir in the vanilla. Combine the flour, baking soda, cinnamon, and salt; stir into the creamed mixture.
Stir in the oats and raisins. Drop by rounded teaspoonfuls onto ungreased cookie sheets.
Bake for 12 to 15 minutes in the preheated oven. Allow cookies to cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.
Interesting Facts
Oatmeal cookies are a type of cookie that is made with oats as the main ingredient.
Oatmeal cookies are believed to have originated in Scotland.
Oatmeal cookies can be made with a variety of mix-ins such as raisins, chocolate chips, nuts, and dried fruit.
Oatmeal cookies are a popular snack in the United States and the United Kingdom.