Ingredients:
- 2/3 cup granulated sugar
- 2/3 cup packed light brown sugar (you can substitute dark)
- 1 cup unsalted butter (2 sticks), softened
- 1 large egg
- 2 ¼ cups all-purpose flour
- 1 teaspoon baking soda
- ½ teaspoon salt
- 1 1/2 cups plus 1/2 cup semi-sweet chocolate chips, divided