Marron glacé

A marron glacé is a confection, originating in France consisting of a chestnut candied in sugar syrup and glazed. Marrons glacés are an ingredient in many desserts and are also eaten on their own. Candied chestnuts appeared in chestnut-growing areas in Europe shortly after the crusaders returned from the Middle East with sugar. Cooking with sugar allowed creation of new confectioneries. But marrons glacés as such (with the last touch of 'glazing'), may have been created only in the 16th century.

Source: Wikipedia