Lightly grease a casserole dish with cooking spray. Set aside.
Heat a non-stick skillet over medium heat and cook the ground beef for about 5 minutes.
Drain the grease from skillet.
Stir in the bell pepper, tomatoes, taco seasoning and water and cook for about 3-5 minutes.
Remove from the heat and set aside to cool slightly.
In a bowl, add heavy cream, sour cream and eggs and beat until well.
In the bottom of prepared casserole dish, place the beef mixture evenly and top with egg mixture.
Slide the Air Fryer Basket inside and adjust the temperature to 300 °F to preheat for 5 minutes.
After preheating, arrange the casserole dish into the Air Fryer Basket.
Slide the basket into Air Fryer and set the time for 20 minutes.
After 17 minutes of cooking, top the casserole with cheese evenly.
After cooking time is finished, remove the casserole dish from Air Fryer and serve.