Preheat your Ninja Air Fryer to 360°F (180°C) for a few minutes.
In a large mixing bowl, whisk the eggs until well beaten. Add the cottage cheese and whisk until combined.
Spray the air fryer basket with cooking spray to prevent sticking.
Add the mushrooms, bell peppers, spinach, cherry tomatoes, and onion to the egg mixture. Stir well to evenly distribute the ingredients.
Pour the mixture into the air fryer basket. Make sure it’s spread evenly.
Sprinkle the grated cheddar cheese on top.
Place the basket in the preheated air fryer and cook for about 15-20 minutes or until the quiche is set in the center and the cheese is golden brown on top. Cooking time may vary, so keep an eye on it.
Once cooked, carefully remove the quiche from the air fryer using oven mitts or tongs.
Allow the quiche to cool for a few minutes before slicing it into wedges. Season with salt and pepper to taste.
Serve the slimming world crustless quiche warm or cold, depending on your preference.
