Heat oven to 350 degrees
Put the butter in a pie plate in the oven while it heats up and remove it when the butter is melted
Cut the cookies into wedges, covering the bottom of the pie plate, on top of the melted butter (I use scissors)
Mix sugar and cinnamon and sprinkle on top
Bake for 15 minutes
While baking, mix in the frosting ingredients
After removing from oven, immediately drizzle with frosting and serve!