In a large mixing bowl, cream butter and both sugars together until well combined, about 1 minutes. Add eggs (all at once) and the vanilla and beat for 1 minute on medium until thick and well combined.
Scoop the batter into the pan. Bake for 10 minutes and remove the pan from the oven and hit it on the counter to force the air out of the batter. Put the pan back into the oven and continue cooking until the center passes the toothpick test. I kept checking it every 3-5 minutes. DO NOT OVER COOK! The dough along the perimeter will cook and brown faster than the middle and that's okay. You want the center to be just at the point where they are done, so it might look like they are slightly under cooked. Mine too about 18 minutes.
When they are done, remove from the oven and hit the pan on the counter again. Use a knife to cut around the edges of the pan and leave 'em alone for a while.
When the pan is cool enough to touch, place onto a cooling rack. Let them sit until totally cool. I gave it about 3 hours.
These turned out so great...the cinnamon with the chocolate is such a great combo! I cut them into bars for all my co-workers to enjoy! Print This