Gluten-Free Corn Muffins

This is easily my favorite corn bread recipe of all time and it just happens to be gluten-free. The combination of sweet rice flour and cornmeal makes these muffins exceptionally light, and the addition of Parmigiano-Reggiano gives them a savory umami boost. For the most tender muffins, use fine-ground yellow cornmeal, not the medium-ground cornmeal that’s used for polenta and grits. If you can’t find the finer grind, whiz medium-ground cornmeal in a clean spice grinder or a high-powered bl