Thick and Chewy Chocolate Chip Cookies

I was craving something sweet after dinner, so I decided to bake some cookies. I recently bought "The Complete America's Test Kitchen TV Show Cookbook" on the recommendation of a friend, so I decided to try one of the recipes in the book. This recipe is very similar to many of the popular cookie recipes except for two things: it uses melted butter (as opposed to room temperature butter) to achieve a chewy texture and an additional egg yolk to prevent the cookies from becoming tough. I didn't want to make too many cookies, so I halved all the ingredients.


Ingredients:
1 cup + 1 tbsp flour
1/4 tsp baking soda
1/4 tsp salt
6 tbsp butter, melted and cooled
1/2 cup brown sugar
1/4 cup granulated sugar
1 egg yolk
1/2 egg white
1 tsp vanilla extract
3/4 cup chocolate chips

Directions:
- Heat the oven to 325 degrees F and line a baking sheet with a parchment paper.
- Whisk the flour, baking soda, and salt; set aside.
- Beat the butter and sugars until smooth; add the eggs and vanilla until incorporated.
- Mix the dry ingredients and wet ingredients until combined; add the chocolate until incorporated.
- Divide the dough into 9 portions and place them on the baking sheet.
- Bake for 15 to 18 minutes.