Marinade Fish cubes with Lemon Juice and Pepper powder for around 1 hour.
Take half of the butter in a Microwave safe bowl and put in microwave and cook in 100% for 1 minute.
Add chopped onions and again put in microwave for 3 minutes in 80%.
Add Garlic paste and cook for 1 minutes in 80%
In a mixing bowl mix marinated fish cubes with the fried onion garlic along with the butter, salt, processed cheese, Mayonnaise, pepper powder parsley , onion powder, garlic powder and olives.
Put the fish chunks along with the marination in a microwave oven safe bowl and cook in 60% for 20 minutes.
Now sprinkle grated Mozzarella cheese and cook in 100% for 5 minutes.
Take the bowl out of the oven and give it a rest of 10 minutes.
Mayonnaise Bhetki is ready to serve.