BakingDessertsGC Erin McDowell’s Buttermilk Sweet Potato Pie Food52’s – Erin McDowell’s Buttermilk Sweet Potato Pie recipe. A simple, rustic pie perfect for fall that I made using McCormick Gourmet cinnamon, ginger, allspice, and nutmeg. About Food52! As a oneread on cindyyamat25 Feb 19405 views