Pull the butter out for 45 minutes to 1 hour. It will be slightly cold, but not very soft like at room temperature.
1 cup Unsalted butter
In a mixing bowl, sift the flour, baking soda, salt, cornstarch, and cinnamon. Set aside.
2 ¾ cup All-purpose flour, 1 teaspoon Baking soda, ½ teaspoon Salt, 1 teaspoon Cornstarch, 1 ½ teaspoon Ground cinnamon
Using a mixer, beat the butter, brown sugar, and sugar. Beat on high for 2 minutes. Scrape the bowl and add in vanilla and eggs. Mix on medium-high for1 minutes. It will be very fluffy in texture.
1 ¼ cups Brown sugar, ¼ cup White granulated sugar, 1 teaspoon Pure vanilla extract, 2 Large eggs
Add in the dry ingredients. Mix on low until just combined.
Chill for 30 minutes. If the dough is too soft to roll, freeze for 15 minutes. Line two cookies sheets with parchment paper. Scoop the dough using a 3oz cookie scoop. The cookie dough balls needs to be right at 3oz. If there is too much like 3.3oz it will spread too much.
8 oz Semi-sweet chocolate bars
Flatten into a disc using your hand. Top with a heaping amount of chocolate. See above photo. Roll back into a ball.
Mix together sugar and cinnamon. Roll the cookie balls into the cinnamon sugar. Chill for another 30 minutes.
½ cup White granulated sugar, 1 tablespoon Ground cinnamon
Preheat oven to 350°F. Bake 6 cookies at a time for 13-15 minutes. The cookies are done when the edges are slightly golden. The middle will be slightly under done.
Let the cookies sit on the hot pan for 5 minutes. Then, rub each warm cookie in the cinnamon sugar. Cool on a wire rack.