
These oat flour cookies are soft and chewy on the insides, with slightly crisp edges and a ton of gooey chocolatey chunks inside. Easy to make, with just 9 simple ingredients and no chill time!
Preheat oven to 350°F and line 2 baking sheets with parchment paper.
In the bowl of a standing mixer with the paddle attachment or a handheld mixer, beat butter, brown sugar, and granulated sugar, mixing until light and fluffy (1-2 minutes).
Add in the egg and vanilla extract, and beat until just combined (do not over-mix!).
Add in the dry ingredients (oat flour, baking soda, and salt) until a dough forms. Stir in the chocolate and mix until just combined.
Use a medium cookie scoop to make 1.5 Tablespoon sized balls and place them on the baking sheet around 3-4 inches apart, leaving the cookies some room to spread.
Bake the cookies (one sheet at a time for even baking) for 8-11 minutes. Remove them from the oven when the edges look set. They will look under-baked in the middle! Sprinkle flaked sea salt over the cookies if desired. Let the cookies cool on the baking sheet for 10-15 minutes, then transfer to a cooling rack to cool completely. Enjoy!