Put the following ingredients into a large bowl:
1 onion, sliced
1 red bell pepper, sliced
1 green bell pepper, sliced
1 cauliflower, broken into florets & sliced
.Sprinkle over fajita/burrito spice mix
1. Mix together so the veggies are coated
2. Heat some oil in a frying pan or wok over a medium/high heat, once hot add the veggies. Cook until tender and golden on the edges. About 10 mins stirring occasionally.
3. Add about 4 tbsp tomato passata and let simmer for a few minutes.
4. Serve in a bowl topped with chopped avocado and chili flakes