"Some of you may remember hearing the voice of Betty Crocker over the radio a number of years ago. In real life, the radio Betty was Zella Lane, who gave us this recipe — "a whale-of-a-big-one which will keep for six weeks in the refrigerator." Interestingly, Zella regularly baked with King Arthur Flour. Sorry, Betty... While we haven't let this batter sit for 6 weeks (it never lasts that long), we've left it for 2 weeks in the fridge, and it's been just fine. The recipe as written makes about 18 muffins; it doubl..."