The new shake is available through August 20, 2019 for $3.89 (may vary). It features a blend of ice cream, Reese's Peanut Butter sauce, and chocolate syrup, topped with hot caramel sauce, Reese's Pieces candies, whipped cream, and a maraschino cherry.
The other two Hershey-branded shakes that Steak 'n Shake offers are the Reese's Peanut Butter Cup Milkshake and the Kit Kat Milkshake.
Photo via Steak 'n Shake.