Step 1

Preparation Preheat oven to 325°F. Line large baking sheet with parchment paper. Stir 3/4 cup butter in heavy medium saucepan over medium-low heat until melted. Remove from heat. Stir in nuts, sugar, flour, orange peel and salt; then stir in egg. Drop some batter by generous tablespoonfuls onto prepared baking sheet, spacing 3 inches apart (cookies will spread).

Step 2

Bake cookies until lacy and golden brown, about 15 minutes. Gently slide parchment paper with cookies onto rack; cool completely. Transfer cookies to paper towels. Repeat with remaining batter, lining cooled baking sheet with clean parchment for each batch. (Can be made ahead. Store between sheets of waxed paper in airtight container at room temperature up to 1 week or freeze up to 1 month.)