Preheat the oven to 350. Line a baking sheet with parchment paper coated with cooking spray.
Bring tamari and honey to a boil in a small saucepan.
Stir in nuts, seeds and cinnamon (if using), mixing well.
Spread nut mixture onto tray evenly and bake around 10 mins until brown and crisp, stirring occasionally. Cool on the tray and mix well. Enjoy!