01 - Preheat your oven to 350°F. Line two baking sheets with parchment paper.
02 - In a large bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy.
03 - Beat in the eggs one at a time, then mix in the vanilla extract.
04 - In a separate bowl, whisk together the flour, baking soda, cinnamon, and salt.
05 - Gradually add the dry ingredients to the wet mixture, mixing until just combined.
06 - Stir in the rolled oats and chocolate chips with a spatula until evenly distributed.
07 - Scoop heaping tablespoons of dough onto the prepared baking sheets, spacing about 2 inches apart.
08 - Bake for 10-12 minutes, or until the edges are golden and the centers are still slightly soft.
09 - Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.