Preheat oven to 350 degrees F. Line baking sheets with parchment paper, set aside. In a medium mixing bowl, combine the flour, baking powder, baking soda, cinnamon and salt, set aside.
In a large mixing bowl combine the melted butter, sugars, eggs, and vanilla extract, Whisk well to combine. Slowly add the dry ingredients into the wet ingredients. Mix to combine. Fold in oats and craisins.
Cover and allow the dough to chill for a half an hour.
Using a portion scoop or measuring spoon, scoop even sized balls of cookie dough – roughly 1 oz. Arrange evenly on the prepared baking sheets, leaving about 2 inches between each cookie.
Bake at 350 for 9-11 minutes until golden brown, cookies will still be soft in the middle. Allow to cool for a few minutes on the cookie sheet before transferring to a cooling rack. Sprinkle with sea salt if desired and enjoy!