There’s a good chocolate chip cookie recipe from the NYT that I’ve used several times. Not only is it heavy, I’ve had to halve the ingredients and even then it still produces enough to satiate the Cookie Monster for probably at least a month.
As a Brit, I also had to convert all of the measurements (patent absurdities like ‘cups of butter’, ‘tablespoons of chocolate’, etc.) to grams — taking account of the variation in density, of course.