Preheat oven to 350 degrees F.

To make oat flour: Place oats in blender and blend on high until oats become a super fine consistency similar to flour. You made need to shake the blender a few times to get it to come together. Alternatively you can use store-bought oat flour.

In a large bowl, whisk together your homemade oat flour, baking soda, and salt. In a separate large bowl combine coconut oil, brown sugar, egg and vanilla until well combined, smooth and creamy. Add dry ingredients to wet ingredients and stir until it forms a dough. Gently fold in chocolate chunks.

Using a cookie scoop, drop cookies onto a baking sheet. I always like to test bake a cookie to see how it bakes up. If it's too thin for you, add 1/4 cup more oat flour. Bake for 9-11 minutes or until cookies are slightly golden brown on the edges. Remove from oven, immediately sprinkle with sea salt and let cool on the cookie sheet for 5-10 minutes then remove and transfer to a wire rack to finish cooling.