I have a milk shake from Steak and Shake, it's made with cookie butter ice ceam!
That sound so delicious!
Cookie butter
Cookie butter (Dutch: "Speculoospasta", Danish: "Trøffel-masse") is a food paste made primarily from speculoos cookie crumbs (known as Biscoff in the USA), fat (such as vegetable oil, condensed milk or butter), flour, and sugar. The ingredients are mixed until it becomes spreadable on a sandwich. In countries like Belgium, the Netherlands, and France, it is a common alternative to nut butter and chocolate spreads. The most common brand name is Lotus Bakeries
" and praises it for its large menu and vegan interpretations of numerous dishes.
The Saturn Cafe uses Fakin' Bacon made from soy, and both its milkshakes and its nachos can be ordered vegan. Colleen Hubbard of "Chowhound" opines that its vegan milkshake is the standard of comparison for all such milkshakes. Its non-vegan shake is made from McConnell's ice cream, and can be topped with berries, chocolate cookie crumbs, and organic peanut butter; "The Daily Meal" named it the 11th best milkshake