The process of browning butter cooks off moisture from the butter, so it reduces in quantity. I have accounted for this in the recipe, so you will see ½ cup (113g) of butter called for to make the brown butter, but only 7 tablespoons (98g) of brown butter is used in the cookie dough. This is not an error - I just accounted for moisture loss when calculating the initial quantity!
Serving: 1 cookie | Calories: 200kcal | Carbohydrates: 21g | Protein: 3g | Fat: 12g | Saturated Fat: 6g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 0.2g | Cholesterol: 27mg | Sodium: 79mg | Potassium: 135mg | Fiber: 2g | Sugar: 12g | Vitamin A: 221IU | Vitamin C: 0.3mg | Calcium: 22mg | Iron: 2mg