Pulse Oats. To start, add the oats to a food processor and pulse 8-10 times to break the oats up a bit. This will give the cookies better texture!
Combine Dry Ingredients. In a medium bowl, combine gluten free oats, gluten-free flour, ginger, cinnamon, baking soda, nutmeg, salt, and cloves. Whisk to combine until evenly blended, then set aside.
Cream Butter & Sugar. In the bowl of a stand mixer or a large mixing bowl, combine softened butter, brown sugar, and sugar. Cream on medium speed with the paddle attachment or a hand mixer 2-3 minutes, until smooth and creamy.
Finish Wet Ingredients. Scrape down the sides of the bowl and add molasses, egg, and vanilla. Mix on medium speed 1-2 minutes, or until evenly blended. The molasses may make the mixture look a little curdled. Don't panic!
Mix In Dry Ingredients. Scrape down the sides of the bowl again and gradually add the dry ingredients, mixing just until there are no more floury patches left.
Chill Dough While You Preheat & Prep. Cover the dough and chill in the refrigerator just 30 minutes, while you preheat the oven to 350 degrees F. and line 2 baking sheets with parchment paper. (I don't recommend chilling longer than 30 minutes, or the dough can become too hard to work with.)
Scoop & Roll Dough. After 30 minutes, remove the dough from the fridge. Use a medium cookie scoop to measure 2 Tablespoon scoops of cookie dough. Roll the dough balls smooth between your hands and place 6-8 cookie dough balls on one of the baking sheets. Return the rest of the dough to the fridge.
Bake 10-12 minutes, or until the cookies are set around the edges, but look a little underdone in the centers. Let the cookies rest on the baking sheet 2-3 minutes to finish setting before transferring to a wire rack to cool completely. Alternate baking sheets with each batch of dough so you don't put cold dough on a hot baking sheet. Let cookies cool completely before icing.