Combine oats, nuts and raisins in a large bowl; mix well and set aside. Combine honey, butter, cinnamon, vanilla, and salt in a saucepan; bring to a boil and let boil for one minute. Pour honey mixture over oat mixture; toss until well blended. Spread on a lightly greased cookie sheet. Bake at 350 degrees for 20 minutes or until lightly browned; stir every 5 minutes while baking. After granola cools, crumble it and store at room temperature in an air tight container. Will keep for up to two weeks.