In food processor, add oatmeal and pulse until partly ground. Don’t make into a fine powder, leave some chunks. I pulsed mine 6 times, at 1-2 seconds each. Set aside.

In mixing bowl, blend together butter with sugars. Mix 1-2 minutes until combined. Add eggs, one at a time. Mix in remaining cookie ingredients and blend until thoroughly combined.

Drop by several tablespoons onto a parchment paper lined cookie sheet. Bake in a 350 degree oven for 14-16 minutes. I like mine a little bit crunchier, so I went closer to 16 minutes. Remove and cool.

To make glaze, whisk together powdered sugar with heavy cream and cinnamon until smooth. Frost each cookie and allow to harden. You can put them in refrigerator to speed up process (about 30 minutes). Enjoy!