•ingredient info: Smoked paprika can be found at most supermarkets.
•Preheat oven to 340°. Line a rimmed baking sheet with a silicone baking mat or parchment paper. Coat with nonstick spray. Mix walnuts and remaining ingredients in a medium bowl. Spread out in an even layer on prepared sheet. Bake walnuts, rotating pan and stirring nuts every 5 minutes, until golden brown, about 15 minutes. Separate any nuts stuck together (they will be very sticky but will dry as they cool) and let cool completely.