Preheat: Preheat your oven to 300°F (150°C) and line a baking sheet with parchment paper or a silicone baking mat.
Mix: In a large mixing bowl, combine the rolled oats, salt, cinnamon and walnuts. Add the maple syrup and vegetable oil and stir well until all the oats are evenly coated.
Spread onto baking tray: Tip the mixture onto the prepared baking tray and press down in one even layer.
Bake: Transfer the baking tray to the preheated oven and bake for about 25 minutes, or until the granola looks golden brown and crisp.
Cool: Remove the baking sheet from the oven and allow the granola to cool completely on the baking sheet. It will firm up as it cools.
Form clusters and add fruit: Once completely cooled, gently break up the granola with your hands so that it forms clusters. Sprinkle the dried cranberries and goji berries into the granola.
Store: Store the granola clusters in an airtight container at room temperature until you are ready to serve it.
