Add the 12 oz frozen green beans directly into your air fryer basket. Distribute them evenly for best results.

Air fry at 350°F (175°C) for 10 minutes, shaking the basket halfway through.

While beans cook, combine 1 tbsp soy sauce, 1 tbsp butter, and 2 tsp light brown sugar in a microwave-safe bowl. Microwave on high for 1 minute until butter is melted and sugar is dissolved. Stir well.

Add optional red pepper flakes to the glaze for a hint of heat.

Transfer the crispy air-fried green beans to a clean bowl.

Pour the warm glaze over the green beans and toss gently to coat. Garnish with sesame seeds if desired. Serve immediately and enjoy!