Quickfix for instant gratification of taste buds.What you need is
Onions /bell pepper squared as below and a split green chilli.
Take some maida. mix in red chilli powder and salt. now coat Quarter button mushrooms in this dry mixture and remove the excess. deep fry and keep aside . It should look as below.
Heat oil in a pan add the split green chili.Add onions and stir for a min or 2 . Add in capcicum
saute for another 2 min and finally add mushroom along with salt,cracked black pepper. Saute for another min.
add 1 table spoon mix of light soy and chili sauce.Serve immediately.