Toffee is a type of confectionery made by caramelizing sugar or molasses along with butter, and occasionally flour. The mixture is heated until its temperature reaches the hard crack stage of 149 to 154 °C (300 to 310 °F) . Toffee is often mixed with nuts or raisins while being prepared. English toffee is a popular variant in the United States, which is a very buttery toffee often made with almonds. It is available in both chewy and hard versions, and Heath bars are a brand of confection made with an English toffee core.

Toffee is made by cooking a base of butter and brown sugar that is gradually cooked to the hard-crack sugar stage between 295 and 309 degrees Fahrenheit. Toffee is butterscotch that has been cooked for a longer period of time. While butterscotch is cooked to a soft-crack stage, toffee is produced by allowing that same butter and brown sugar mixture to reach the hard-crack stage. Butterscotch tends to be chewy and pliable, while toffee is brittle and more breakable.

Toffee is often combined with nuts such as almonds and semi-sweet chocolate to create classic English toffee. This is done by spreading the hot toffee out flat over a sheet pan and topping it with semi-sweet chocolate chips. Allow the chips to melt for about 30 seconds and carefully use the back of a spoon to spread the chocolate over the entire top of the toffee. Top with chopped or slivered almonds.

In summary, toffee is a hard candy made by caramelizing sugar or molasses along with butter, and occasionally flour. It is often mixed with nuts or raisins while being prepared and can be combined with chocolate to create classic English toffee.