Butter: This recipe uses melted butter. I prefer to use salted butter, but you can use unsalted butter if you prefer.
Measuring Flour: If you aren’t weighing your ingredients, I can’t recommend that enough. If you are using measuring cups, be sure to sift or stir the flour before measuring. Flour packs easily and using too much flour in cookies will give you dry, crumbly dough and cookies that don’t spread.
Chocolate Chips: I use semisweet chocolate chips. You can use another type of chocolate chip, like milk or bittersweet, if you prefer.
Fudgy cookies: For denser, fudgier cookies, chill the frosted cookies before eating.