Packaged cornbread mix is usually sweet enough to make corn cupcakes instead of corn muffins, but this mix from Hodgson Mill produces a savory muffin with the pleasantly gritty texture of stone-ground whole grains - yellow corn meal and wheat flour. All you do is add oil, milk and an egg. A 71/2- ounce package (makes 6 muffins or one 8-x-8-inch cornbread) is $1.59 at Natural Market in Garden City and at other supermarkets where Hodgson Mill products are sold.