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Air Fryer Green Bean Casserole with Crispy Fried Onions

Air fryer green bean casserole cooks in a 7-inch dish until bubbling around the edges and hot in the center. A quick final air-fry turns the crispy fried onion topping golden brown.
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Prep Time 5 minutes
Cook Time 22 minutes
Resting time 5 minutes
Total Time 32 minutes
Servings: 4 servings
Course: Side Dish
Cuisine: American
Calories: 250
Ingredients Equipment Method Notes

Ingredients
  

casserole
  • Nonstick cooking spray
  • 2 can (14.5 oz) green beans cut, drained well
  • 1 can (10.5 oz) cream of mushroom soup condensed
  • 0.5 cup whole milk
  • 1 tsp soy sauce
  • 0.25 tsp black pepper
topping
  • 1 cup crispy fried onions

Equipment

  • 1 6-quart air fryer
  • 1 7-inch round oven-safe baking dish

Method
 

Make the casserole
  1. Preheat a 6-quart air fryer to 350°F for 3 minutes.
  2. Lightly coat a 7-inch round oven-safe baking dish that fits in the air fryer basket with cooking spray.
  3. In a 2-quart bowl, stir together the green beans, cream of mushroom soup, milk, soy sauce, and black pepper.
  4. Transfer the mixture to the prepared dish.
  5. Air-fry at 350°F for 12–16 minutes, until bubbling around the edges and hot in the center.
Add the topping
  1. Scatter the crispy fried onions evenly over the casserole.
  2. Air-fry for 1–3 minutes, checking every minute, until golden brown.
Rest and serve
  1. Let the casserole rest for 5 minutes before serving.

Notes

Drain the green beans well to help keep the casserole from turning watery. Refrigerate leftovers for 3–4 days; freezing is not recommended because the texture can suffer. For a gluten-free option, use gluten-free cream of mushroom soup, tamari, and crispy fried onions.