In a small bowl, stir 6 tbsp of sugar and 2 teaspoons of cinnamon, mix together and set aside.

Oreo crunch

Mix the melted butter and Oreo chunks together, making sure all of the pieces are evenly coated in butter.

Place on a greased baking sheet and bake in the oven at 400 for about 6-8 minutes. They will still feel a bit soft but will harden up as they cool.

Cookies

In the bowl of a stand mix cream together the sugar, brown sugar and butter in a small bowl until light and fluffy (about 3-4 minutes)

Add the egg and mix well combined

In a large bowl, whisk together flour, cream of tartar, baking soda, spices, cornstarch and salt

Stir in the flour mixture until a dough starts to form - don't overmix

Using a large cookie scoop, place cookie dough onto a baking sheet. Roll each piece into a ball and and then roll in the cinnamon-sugar coating. Make sure they are 2 inches apart because they will spread as they bake

Using your thumb, gently press a dent into the top of each cookie and fill it with the Oreo crunch topping.

Bake in the preheated oven on the center rack at 350 for about 14-16 minutes minutes. Remove from the oven when they still look a bit undercooked in the middle, as they will continue cooking on the baking sheet. Allow cookies to cool for about 10 minutes before transferring to a wire rack to cool completely.