Introducing Reese’s Thanksgiving Pie – a spin on a tried-and-true holiday treat that contains the only two ingredients a dessert really needs…chocolate and peanut butter. Oh, and did we mention that this peanut butter cup is the size of a real pie? Reese’s Thanksgiving Pie is the largest Reese’s Peanut Butter Cup to date, featuring a 9-inch diameter and 3.4 pounds of peanut butter and chocolate. Reese’s knows when you bring together friends and family for Thanksgiving Dinner, no table spread is complete without dessert – so we created the dessert everyone wants a piece of.