Wash, clean and wipe the mushrooms clean. Chop the length-wise into 3-4 pieces depending on the size.
Add all purpose flour, corn flour, salt, red chilli powder, ginger garlic paste and oil.
Add water little by little and mix everything together so that it coats the mushrooms. The batter should be thick and coat the mushrooms.
Line a baking tray with baking sheet and place the prepared mushrooms in a row, not very close together.
Bake in a preheated oven at 200°C for 12-15 mins until the mushrooms are golden brown top and bottom.
In a pan, heat oil. Add finely chopped garlic and green chillies. Fry for a few seconds. Add cubed onions and capsicum, fry for a couple of minutes on medium flame.
Next add soy sauce, sugar, salt and pepper powder. Mix everything and fry for 1-2 mins.
Add the oven baked mushrooms into the pan. Toss it around until the mushrooms are coated in sauce. Garnish with chopped spring onions.
Serve warm or hot with noodles, fried rice or as appetizer.