01 - Preheat the oven to 190°C.
02 - Thoroughly clean Portobello mushrooms and gently remove the stems. Arrange the mushrooms gill side up on a baking sheet.
03 - In a mixing bowl, combine cherry tomatoes, mozzarella, chopped basil, olive oil, salt, and pepper. Mix until ingredients are evenly coated.
04 - Generously fill each mushroom cap with the tomato and mozzarella mixture.
05 - Drizzle the filled mushrooms with balsamic glaze and an additional splash of olive oil.
06 - Bake for 20-25 minutes, or until mushrooms are tender and cheese is melted.
07 - Remove from the oven and allow to cool slightly before serving.