01 -  Peel the apples, remove the cores, and slice them thinly. 
 02 -  Place the pre-made tart crust into a tart pan. Arrange the sliced apples in a circular pattern over the crust. 
 03 -  Sprinkle granulated sugar and ground cinnamon evenly over the apple slices. 
 04 -  Cut the unsalted butter into small pieces and distribute them evenly over the apples. 
 05 -  Preheat the oven to 180°C. Bake the tart for 25–30 minutes, or until the apples are tender and the crust is golden brown. 
 06 -  Remove the tart from the oven and allow it to cool slightly before serving.