Heat oven to 350 degrees.
In a medium bowl whisk together the flour, baking soda, cinnamon, and salt. Set aside.
In large bowl, beat butter and sugars on medium speed of electric mixer until creamy.
Add eggs and vanilla; beat well.
Gradually add the dry ingredients, mixing after each addition until combined.
With a wooden spoon, fold in the oats and raisins until combined.
Drop dough by rounded tablespoonfuls onto ungreased cookie sheets.
Bake 8 to 10 minutes or until light golden brown. Cool 1 -2 minutes on cookie sheets before removing to a wire cooling rack. Cool completely. Store tightly covered.