Heat oven to 325 degrees F. Butter jelly roll pan, 15 1/2 x 10 1/2 x 1. Heat sugar, syrup, butter and salt in 3-quart saucepan over medium heat, stirring until sugar dissolves, 5 minutes. Remove from heat, stir in cereal and nuts until well coated. Spread in pan. Bake 15 minutes. Cool 10 minutes. Loosen with metal spatula. Let stand 1 hour. Store in covered container.