Using higher moisture ingredients like brown sugar and butter/vegan butter will help make your cookie more chewy, and doing things to reduce how much your cookie spreads while baking will keep it soft!u003cbr/u003eThere are five main changes I recommend making to get soft and chewy oatmeal cookies:u003cbr/u003e1. Use brown sugar instead of granulatedu003cbr/u003e2. Use butter (or vegan butter) for your fatu003cbr/u003e3. Slightly lessen your baking time by a couple minutesu003cbr/u003e4. Use a baking sheet lined with parchment paper to reduce the spread of your cookiesu003cbr/u003e5. Chill your cookie dough for 30 minutes before baking.