Prepare the beans

• Drain and rinse the butter beans in a colander.
• Pat them dry with a clean towel so they crisp up properly.

Season the beans

• Toss the beans in a bowl with the olive oil spray so they are evenly coated.
• Sprinkle with the movie theater butter salt and the rosemary garlic seasoning.

Air fry

• Preheat the air fryer to 200 °C.
• Spread the beans in a single layer in the basket.
• Air fry, shaking the basket halfway through, until golden and crunchy.

Cool and serve

• Let the beans cool slightly so they crisp up further.
• Taste and adjust the seasoning, then serve.