Gluten-free certainly is a buzzword these days, but there are sooo many gluten-free products out there that are made of processed junk. Not these cookies!
Preheat oven to 375 degrees F. Prepare a baking sheet (I like to use parchment paper).
Mix dry ingredients (oat flour, oats, baking sugar and sugars) in a medium-sized bowl. Make a well (hole) in the middle and add melted butter, egg yolks, vanilla and milk. Stir to combine. Fold in chocolate chips.
Place batter in the refrigerator for 15-30 minutes. Batter is somewhat wet - don't worry! Using a cookie scoop or spoon, scoop out rounded Tablespoon amounts of dough, roll them into balls and place them 2 inches apart on a baking sheet.