Absolutely! This apple walnut salad can be made ahead of time. - Cook buckwheat in advance, let it cool and store in an airtight container in the fridge. - Wash greens, drain, or dry them in a salad spinner and gently dry them with a paper towel. Store them in a covered container in the refrigerator. - Make salad dressing and store it in a jar. - Slice apples just before assembling the salad to keep them from turning brown. - Just mix everything together before serving and enjoy.