In a food processor, pulse 3/4 cup nuts with the sugar and cinnamon until fine. Pour in 3 or 4 tablespoons of wine and add all the apple pieces, except for the reserved half. Process until it looks like mortar, adding more wine if necessary.

Grate the Pink Lady apple half on the large holes of a grater. Transfer haroset to a bowl and mix in remaining grated apple and 2 tablespoons chopped walnuts. Serve cold or at room temperature.