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