If you freeze some for later use, add a minute or two to the baking time. *I’ve made these cookies with both old fashioned oats and quick oats. You'll get thicker cookies using quick oats. I've also used a combination of both.**Using dark brown sugar gives a wonderful flavor and extra chew.
The Best Oatmeal Raisin Cookies https://www.thegeneticchef.com/the-best-oatmeal-raisin-cookies/