Notes
*If you only have old-fashioned/rolled oats, you can use them as is and your cookies will have a slightly more oat-y texture to them. OR place 2 cups of old-fashioned oats into your food processor, pulse until most of the oats have been cut into smaller pieces and measure out 1 1/2 cups of the processed oats to use in the cookies.
To add chocolate or peanut butter chips, add 2 cups of chips to the dough after the oats have been stirred in.