Preheat your oven to 350°F (175°C).

In a bowl, whisk together the flour, baking soda, salt, and cinnamon.

In a separate large bowl, cream together the butter, granulated sugar, brown sugar, and vanilla extract until smooth.

Beat in the eggs one at a time.

Gradually add the flour mixture to the butter mixture.

Fold in chocolate chips or nuts if desired.

Scoop dough onto cookie sheets and bake for 10 to 12 minutes or until golden brown.

Let cool on a wire rack.