In large bowl, combine oats and walnuts; mix well. Spread evenly in 15 x 10-inch jelly roll pan or on rimmed baking sheet. In small bowl, combine honey, oil, vanilla, cinnamon , and salt (if desired); mix well. Pour over oat mixture; mix well.
Bake 30 to 35 minutes or until golden brown, stirring every 10 minutes. Stir in dried fruit. Cool completely. Store tightly covered up to 1 week.