01 - Preheat the oven to 340°F. Line a large baking sheet with parchment paper.
02 - In a large bowl, whisk together olive oil, maple syrup, smoked paprika, cumin, cinnamon, cayenne, sea salt, and black pepper until fully blended.
03 - Add almonds, cashews, pecans, and walnuts to the bowl, tossing thoroughly to ensure even coating with the spice blend.
04 - Spread the spiced nuts in a single even layer on the prepared baking sheet.
05 - Roast in the preheated oven for 18 to 20 minutes, stirring once halfway through until golden and aromatic.
06 - Remove baking sheet from oven and allow nuts to cool completely; they will crisp as they cool.
07 - Transfer cooled nuts into an airtight container for storage.