Step 1: 1) Heat the oil in a large frying pan and fry the onions and garlic for about 5mins until they are soft and golden brown.
Step 3: 2)Add the Red and Green Peppers, Chillies and Oregano and stir well. Fry gently for about 10 minutes until cooked and tender.
Step 5: 3) Add the mushrooms and cook quickly for 1 minute more, stirring well to mix the mushrooms with the other vegetables. Add a good dash of salt and pepper and stir again.
Step 7: 4)Spoon the Sizzling hot vegetables into the tortillas and add whatever toppings you like. Roll up or fold over the fajita, then bite in!!