In a small mixing bowl, combine honey, melted butter, smoked paprika, kosher salt, and cayenne pepper (if using). Stir well until combined.

In a large mixing bowl, add the cashews and pour the honey mixture over them. Fold gently with a spatula until all cashews are evenly coated.

Spread the coated cashews into a single layer on a prepared baking sheet. Bake for 15 to 20 minutes in a preheated oven at 300°F (150°C), tossing the nuts every 5 minutes to ensure even cooking and prevent burning.

Serve the nuts warm, or let them cool completely on the baking sheet before serving at room temperature. Break the nuts apart if they stick together. Enjoy your homemade honey-roasted cashews!