Preheat oven to 325 degree F. Using about 2 tablespoons butter, generously butter a 15x10x1-inch baking pan; set aside. In a large bowl stir together the nuts, granulated sugar, corn syrup, salt, and pepper until well combined; spread in prepared pan.
Bake for 25 minutes or until golden and bubbly, stirring once or twice. Remove from oven. Sprinkle generously with raw sugar; toss to coat. Transfer mixture to a large piece of foil. Cool completely, about 30 minutes. Break apart to serve.
Store nuts in airtight container at room temperature for up to 2 weeks or in freezer container in freezer up to 3 months. Makes 20 to 24 (about 1/4-cup) servings.