McDonald's blended ice cream dessert with mix-ins is called the McFlurry.
The McFlurry is made from McDonald's vanilla soft serve combined with ingredients such as crushed cookies, candy pieces, or sweet sauces. Its name combines “Mc,” from the McDonald's brand, with “flurry,” suggesting the swirling mixture of ice cream and toppings.
The dessert was created in 1995 by Canadian McDonald's franchise owner Ron McLellan in Bathurst, New Brunswick. The first McFlurry flavor was Oreo, and the product later reached the United States in 1997. Flavors vary by country and often include locally popular candy bars or limited-time promotional ingredients.
A McFlurry is sometimes confused with a sundae because both use soft serve, but a sundae is generally topped with sauce, while a McFlurry has its inclusions blended into the ice cream. It is also part of the broader “mix-in” dessert category, alongside Dairy Queen's Blizzard.