Preheat your oven and prepare the diced beets with a little oil, salt, and pepper. Spread them evenly on a baking sheet and roast until tender and slightly caramelized. Let them cool before adding to the salad. This step brings out their natural sweetness.
Rinse the buckwheat under cold water. Bring water or broth to a boil, add the groats, and simmer until tender. Once cooked, let it rest covered before fluffing and cooling. Proper cooking ensures a light texture.
While everything cooks, dice the apple into small pieces. Toast the walnuts in a dry pan until fragrant, then chop them. These steps add crunch and freshness to the salad.
Whisk together olive oil, apple cider vinegar, maple syrup or honey, Dijon mustard, salt, and pepper. Mix until smooth and well combined. The dressing should taste balanced — slightly sweet, tangy, and savory.
Combine cooled buckwheat, roasted beets, apple, walnuts, cranberries, and parsley in a large bowl. Pour the dressing over the top and toss gently. Let it sit for a few minutes before serving so flavors blend beautifully.