Preheat the oven to 350 degrees F. Melt the butter in a small skillet, then add the curry powder, salt, and cayenne and cook, stirring constantly, until aromatic, about 30 seconds.
Toss the cashews with the curry butter on a baking sheet, spread the nuts in a single layer. Bake until the nuts are hot and shiny, about 10 minutes. Cool to room temperature.
From Food Network Kitchens