Line or spray a baking sheet. Preheat your oven to 350℉.
In the bowl of a stand mixer or large mixing bowl, add the butter and sugars. Cream them together, beating on medium speed for 3-4 minutes.
While the butter beats, to a medium mixing bowl, add the flour, oats, baking soda, salt and cinnamon. Set aside.
Add in the egg to the butter mixture and mix until combined. Add in the vanilla extract and mix until combined.
Add the dry ingredients to the butter mixture and beat until combined. Add in the chocolate chips and dried cranberries and mix for an additional 5-10 seconds until combined.
Scoop 2 tbsp size cookies and ensure they're at least 2 inches apart on the pan. Top with additional dried cranberries and chocolate chips if you like. Bake for 10-12 minutes or until the edges just start to turn golden brown.
Allow to cool for 5 minutes before transferring to a wire rack to completely cool. Store in an airtight container for up to 4 days and enjoy!