Join Molly Baz and Adam Rapoport in the Bon Appétit Test Kitchen as they make pumpkin chiffon pie. This light-as-can-be pumpkin chiffon pie gets its cloudlike texture from the addition of beaten raw egg whites. Be sure to take them all the way to stiff peaks for a slice of pie that can hold its shape. Parbaking the graham cracker crust at a relatively low temperature for a longer period of time ensures a crisp and deeply fragrant crust that won’t become soggy once the pumpkin filling is added.