Add the butter to a skillet over medium heat and bring to a boil. Stir continuously as the butter develops a layer of foam and then eventually turns a golden brown color. Remove the skillet from the heat and let the butter cool for 15 - 20 minutes.
½ cup butter
Preheat oven to 350 F. In a large bowl add browned butter, brown sugar, and sugar. Mix well with a hand mixer or stand mixer until the sugar is well blended into the butter.
¼ cup brown sugar - substitute with coconut sugar if desired, ⅓ cup sugar
Add the egg and vanilla extract to the bowl and mix well to incorporate.
1 egg - room temperature, 2 teaspoon vanilla extract
Add the oat flour, baking soda, and sea salt to the bowl and gently mix into the dough. You can use a mixer on low speed for this or a rubber spatula. Be sure not to overmix this step and only mix until no flour clumps remain.
1 ⅓ cup oat flour, ½ teaspoon sea salt, ½ teaspoon baking soda
Add the chocolate chips to the bowl and fold into the dough to disburse.
1 cup chocolate chips
Use a large cookie scoop to scoop the dough into cookies on a parchment paper lined baking sheet. Leave at least 2 inches between each cookie so they have room to spread in the oven. Bake for 12 - 15 minutes until the edges are golden brown and the centers of the cookies are slightly set.
While the cookies are still warm, use a large circular cookie cutter to form the cookies into a perfect circle or use a fork to gently press the edges of the cookie towards the center. This is optional but helps to create a perfectly circular shape. Add some flaky sea salt on top of each cookie (optional) and allow them to cool completely on the baking sheet before enjoying!