Heat a pan add 1 tsp butter, 1 tsp oil add garlic,onion capsicum and saute for 2 mins.Then add veggies along with chilli flakes,mixed herbs and salt.
Saute for 2 mins then add 1/4 cup water.
when it starts to boil cook covered for 5-7 mins or until the vegetables are 3/4th cooked.Switch off and set aside.
To another pan melt butter add wheat flour whisk it well immediately add milk, whisk continuously.
We need a thick sauce for this so keep cooking until it coats the laddle -when you draw a line it should stand firm as shown.
Add pepper powder,salt and cheese mix well, the sauce will be creamy and thick.At this stage add roasted vegetables.
Mix well,cook for 2 mins and switch off.This should be done off the stove : Now take a heavy base pan preferably iron, transfer the veggie mixture to it.spread it well.Cover the top by sprinkling cheese.Add chilli flakes,mixed herbs and piri piri masala powder.
Now keep on stove and switch on.Cook covered for 5-7 mins or until cheese starts to bubble.Cut and serve hot with toasted bread.