Please be sure to chill dough long enough till it holds its shape when scooped. I chilled mine for 2 hours. This makes it easier to wrap the cookie around the brownie. I used a large ice cream scoop, that holds about 1/2 cup of cookie dough, give or take a bit. Preheat the oven to 350 degrees F. Spray a large cookie sheet with non stick cooking spray & set aside till needed. IMPORTANT TO PLACE THE COOKIES FAR APART ABOUT 3-4 INCHES OR SO. On the one cookie sheet, I could only fit 4 cookies. My husband said they were the size of Hamburgers, to give you an idea of the size of them. On the LARGER pan I could ONLY FIT 6 COOKIES AND 2 OF THEM DID TOUCH DURING BAKING. SO ALLOWING ENOUGH SPACE BETWEEN EACH COOKIE IS IMPORTANT.
Measure out the flour add the baking soda/baking powder & salt, then stir to blend and set aside till needed.
Add the butter to a medium bowl, melt in microwave and cool.
Measure out both sugars into a small bowl.
Blend the sugar with cooled melted butter, and beat till blended.
Add eggs and yolks one at a time beating well after each addition.
Now add flour into the butter mixture in 3 intervals beating well after each addition.
Now add the vanilla bean paste/ or extract, and Rum extract, & beat well to blend.
Next add the chopped nuts and the chocolate chips, and blend together till mixed into cookie batter. Refrigerate for at least 2 hours or until cookie dough is firm and holds its shaped when scooped.
Remove from fridge, and using a large ice cream scooper, scoop out enough dough to fill the scoop.
This is the size brownie I added to the first scoop of cookie dough.
Now scoop a second scoop and place on top of brownie.
Now carefully work to enclose brownie between the 2 scoops of cookie dough.
Place on prepared cookie sheet, and bake in preheated 350 degree F. oven for about 22-25 minutes.
Remove from oven but leave on cookie sheet without disturbing for at least 10 minutes, allowing cookies to continue to cook. then remove and place on a cooling rack.
When cookies are completely cooled place on a large serving platter.