Can I make these oatmeal raisin cookies gluten-free, and if so, which flour substitute works best?
Yes—swap the 1½ cups of all-purpose flour with an equal amount of a certified “cup-for-cup” gluten-free all-purpose baking blend that already contains xanthan gum (e.g., rice flour–tapioca–potato starch mix). The texture and spread remain virtually identical, provided you also use certified gluten-free rolled oats.
How can I make these oatmeal raisin cookies dairy-free without compromising taste and texture?
Replace the 1 cup of butter with an equal amount of stick-style plant-based butter (or refined coconut oil), creaming it exactly as you would dairy butter; the structure and spread stay the same, and the flavor is nearly indistinguishable once baked. If using coconut oil, add a pinch more salt and 1–2 teaspoons of unsweetened plant milk to mimic butter’s moisture, then chill the dough well to keep the cookies thick and chewy.
What’s the best way to store and freeze these cookies so they stay chewy?
Once cooled, keep baked cookies in an airtight container at room temperature with a slice of bread or apple peel inside; the added moisture keeps them chewy for up to 4–5 days. For longer storage, freeze the baked cookies—or better yet, portioned raw dough balls—on a sheet pan until firm, then seal in zip-top freezer bags for up to 3 months; thaw dough overnight in the fridge and bake straight from chilled, or let baked cookies come to room temperature for 15 minutes to regain their soft-chewy texture.