1tablespoonminced fresh chivesplus more for garnish
1/4teaspoonfreshly ground black pepper
Spread walnut pieces on a baking sheet and place in the oven for 5 minutes, or until toasty and fragrant. Remove and let cool completely, 10 minutes.
Remove the tart shells from their packaging and place on a large baking sheet. In a mixing bowl, combine the cheese, sour cream, chives and black pepper. Stir well until consistently creamy. Fill each tart shell with the cheese mixture using a small spoon. Top with the toasted walnuts. Refrigerate until ready to serve.
Serve chilled, or bake at 300°F for 8 minutes, or until the cheese is melted.