Preheat the oven to 325°F. Lightly grease a baking sheet with cooking spray.
In a medium sized mixing bowl, combine the nuts and seeds. Add the maple syrup, spices and salt. Toss to combine.
Transfer the nuts onto the prepared baking sheet and spread them evenly into a single layer. Bake for 15~20 minutes, stirring once in the midway point, until nuts are fragrant and lightly roasted. Remove from the oven, cool completely and store in an airtight container.