1. Preheat oven to 350 degrees Fahrenheit (175 degrees Celsius).
2. In a medium mixing bowl, place the egg white, oil, sugar, vanilla, spices, salt, and one tablespoon maple syrup. Whisk to combine. Add in the nuts, and toss until evenly coated.
3. Spread the walnuts in an even layer on a rimmed, Gefen Easy Baking Parchment-lined baking sheet, taking care not to overlap the nuts or crowd them. Bake for 15 minutes on center oven rack, tossing halfway through.
4. Remove from the oven and drizzle with remaining tablespoon of maple syrup and a light sprinkle of additional spices. Toss to coat. Allow to cool completely, at least 30 minutes. Nuts will dry and crisp up as they cool.