Sea salt for sprinkling on top of cookies,if desired
Preheat oven to 375 degrees F. Line a large baking sheet with a Silpat baking mat or parchment paper and set aside.
Whisk together the dry ingredients in a medium bowl. Set aside.
Using a stand mixer, beat the butter and sugars together until creamy, about three minutes. Add the egg and vanilla, mix until combined. Slowly add the dry ingredients to wet ingredients. Mix until just combined. Stir in the oats and chocolate chips.
Drop cookies on baking sheet, about 2 inches apart. Sprinkle cookies with sea salt, if desired. Bake for 10-12 minutes or until cookies are light brown around the edges. Remove cookies from oven and let cool on baking sheet for two minutes. Transfer to a cooling rack and cool completely.