Combine the chopped parsley and crushed garlic in a mortar. Pound the mixture using a pestle.
Add salt, ground black pepper, and olive oil. Grind the ingredients using the pestle.
Arrange the milkfish in a plate in a position wherein the open cavity faces upwards. Rub the garlic and parsley mixture over the milkfish. Let it stay for 3 hours.
Cut the head and tail off the milkfish. Slice into serving pieces. Arrange in a baking tray lined with aluminum foil.
Preheat the oven to 370F. Once the oven gets hot, bake the milkfish for 45 minutes or until the top turns light brown.
Remove from the oven and transfer to a serving plate. Serve.
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