The Mint Oreo Blizzard features Oreo cookie pieces and creme de menthe blended with vanilla soft serve, while the Mint Shake offers a mix of creme de menthe, milk, and vanilla soft serve, crowned with whipped topping.
They also have a limited-time deal where you can buy one Blizzard at regular price and get a second one for 80 cents at participating locations.
Photo via Dairy Queen.