Need a quick hostess gift? Try packaging these nuts in cellophane bags or silver tins for a festive touch.
1. Preheat oven to 350°F with a rack in center. In a pan, melt butter with rosemary, red pepper flakes and salt.2. Spread walnut halves on a large baking sheet. Pour butter mixture over and toss to coat.3. Bake, stirring occasionally, until golden, 20 to 25 minutes.