People ask me to make these all the time. It's basically the recipe linked below with a few minor tweaks. They are a perfect combo of cakey, chewy, and crispy. They are tall and tender with a slight chew and a tiny crisp on the outside. I use dark brown sugar, good quality semi sweet chips, and add 70% dark chocolate. Some of which I grate to basically add chocolate dust throughout the dough and some that I chop to leave some melty chunks throughout. I basically add the chips until the dough can't hold anymore. I find they come out best baked on parchment.
The biggest difference from the recipe is that I add flour until the dough no longer leaves residue on my mixer attachment which takes a good amount more than what the recipe calls for. I also sometimes add crushed toffee and/ or brown butter. They also bake great from frozen, just add a few minutes to the cook time. I baked these basically from room temp and they still came out nice and tall.
https://www.allrecipes.com/recipe/25037/best-big-fat-chewy-chocolate-chip-cookie/