Even prior to my current efforts to improve my cooking skills, I was fairly confident in my hamburger recipe and technique. Indeed, it was gratifying to see that Mark Bittman's recipe in How to Cook Everything: The Basics was essentially the same as mine: fold chopped onions into the meat before cooking. What was new for me, however, was using the broiler for the job. I usually cook them on the stove top. It made for a nice variation, providing an exterior crust. I might not cook them quite as long next time.