There are a few different methods you can use to roast cashew nuts without an oven:
Stovetop: Heat a dry skillet or frying pan over medium heat. Add the cashews and stir constantly until they are toasted and fragrant, about 5-10 minutes.
Microwave: Spread the cashews out in a single layer on a microwave-safe plate. Microwave on high for 1-2 minutes, stirring every 30 seconds until they are toasted and fragrant.
Air fryer: Preheat your air fryer to 350°F (180°C). Spread the cashews in a single layer in the air fryer basket and roast for 5-7 minutes, shaking the basket every few minutes until they are toasted and fragrant.
Regardless of the method you choose, make sure to keep a close eye on the nuts as they roast to prevent burning. Once they are done, let them cool completely before enjoying or storing.