Preheat the oven to 350 degrees F. Spread the pecans and walnuts on a rimmed baking sheet and bake until lightly toasted, about 6 minutes. Cool completely and roughly chop.
Stir together the sour cream, chives, mayonnaise, honey, lemon juice, 1/2 teaspoon salt and pepper to taste in a large bowl. Add the celery, apples, grapes, cranberries and nuts and toss to combine; season with salt and pepper to taste. Serve immediately.
Recipe courtesy of Patricia Heaton Parties