On a large rimmed baking sheet, toss the mixed nuts with the sage, rosemary and olive oil.
Season with salt and pepper. Spread the nuts into an even layer.
Bake for 3 hours. The nuts should be golden brown but not burnt. Let the nuts cool on the baking sheet until they are crisp, about an hour, and then transfer them to a bowl and serve.
Notes
Store in an airtight container. These will stay fresh for weeks. Don't be afraid to try different combinations of nuts and herbs! This recipe is one that is easy to change up.