When making cookies with steel cut oats, you have two options. You can use traditional Irish oatmeal, or you can use the quick-cooking variety. For an easy batch of cookies, use raw “instant” or “quick-cooking” steel cut oats. These are broken down into smaller pieces than traditional Irish oats, so they give the cookies a nice texture. If you’re using traditional steel cut oats to make these steel cut oatmeal cookies, you’ll want to cook them in a pot first, just like when you’re making oatmeal. They’re a bit too hard when baked into a cookie in their raw form, which leads to a lot of extra chewing. To use cooked oats, simply substitute one cup of cooked oatmeal for the instant raw oats listed in this recipe, and add an extra half cup of flour (or more as needed to achieve a typical cookie dough consistency).