Iced Oatmeal Cookies

I used to buy these all the time, Kroger usually has them as a generic offering.  Cookies are getting expensive!  I ran across some of these in a Twitter thread and clicked through to a recipe.  I’m amused at how recipes online are often copied word for word from each other.  Somewhere there is an Ur recipe but you can’t find it on Google.
Getting the frosting just right is harder than it would seem. About the time I had the technique down I was running low. It seemed to me when I began that a cup and a half of powdered sugar was a bunch but it was about the right amount.