This salad is inspired by Charoset (ka-ROW-set), a chopped apple and walnut dish that is traditionally served during Passover Seder. You can substitute the walnuts for pistachios or pecans, or make it nut-free. The crushed matzo adds a nice crunch, but if you don’t have it, and aren’t making this dish kosher for Passover, you can add croutons or lightly crushed crackers.