Preheat the oven to 350 degrees. Put the butter in the microwave for about 30 seconds or until almost completely melted. It shouldn't be boiling or hot just melted.
Add the sugars (brown and white). Mix thoroughly
Add the vanilla and egg. Mix well.
In a separate bowl mix dry ingredients (flour, baking soda, and salt). Mix well.
Add dry ingredients to wet ingredients and mix very well. Dough should start to form.
Add chocolate chips and mix until well incorporated.
Use a cookie scoop for the cookies. that should give you 12 cookies. Set them two inches apart on a cookies sheet.
DO NOT OVER BAKE! Take them out even if they don't look fully baked. Remember they will continue to cook on the hot pan when you take them out the oven.
Bake them from 9-11 minutes. 10 seems to be the sweet spot for me.
Take them out and let them cool on the pan for about 30 minutes.