Don’t worry if your oat flour still has chunks in it, get the oat flour as smooth as you can. I recommend chilling the dough for at least 2 hours. Chilling the dough will allow your gluten free dark chocolate chunk oat cookies to absorb all of the flavors and your cookies will be more flavorful. Using parchment paper will ensure your cookies won’t stick to the pan. You can freeze the pre-scooped dough balls to thaw place in refrigerator until you're ready to use.