Apple crisp (name used in the United States and Canada) or apple crumble (name preferred in the United Kingdom, Australia and New Zealand) is a dessert consisting of baked chopped apples, topped with a crisp streusel crust. Ingredients usually include cooked apples, butter, sugar, flour, cinnamon, and often oats and brown sugar, ginger, and/or nutmeg. One of the most common variants is apple rhubarb crisp, in which the rhubarb provides a tart contrast to the apples. Many other kinds of fruit crisps are made. These may substitute other fruits, such as peaches, berries, or pears, for the apples.