Preheat the oven to 400°. In a medium bowl, combine the hazelnuts, pumpkin seeds, cashews, sage, thyme, maple syrup, cayenne pepper, sea salt and black pepper. Spread the mixture on a sheet tray and place in the oven. Bake, stirring occasionally, until browned and fragrant, about 15 minutes.
Remove from the oven and set aside to cool slightly. Serve warm or at room temperature. The mix will keep in a tightly sealed container for up to 1 week.