<p>Heat oven to 400°F. In a bowl, toss 1 cup of walnuts with 2 tsp olive oil, then toss with 1 tsp finely chopped fresh rosemary and ¼ tsp each salt and pepper. Arrange in a single layer on a rimmed baking sheet and bake until they smell lightly toasted, six to eight minutes. </p><p><em>Serves 2</em></p>