These muffins feature a neat trick that you can use in other recipes for baked goods: Grating on the large holes of a box grater is a quick and easy alternative to having to chop the pear and apple, and the shavings will be more evenly distributed throughout the batter -- and the baked treats. Replacing some of the white flour with whole wheat and oats gives the muffins chewier texture and a more wholesome nutritional profile (read: more fiber).