Tarte Tartin is one of those all time classic French desserts. It’s decadent, but very easy to make. The combination of crisp pastry, caramelized apples and delicate vanilla is a winner. The traditional recipe uses Calvados, which is the apple liqueur that comes from the Normandy region of northern France (France’s apple capital). We have used Grand Marnier but you can really use any liqueur you like or make it without alcohol if you prefer.