Preheat the oven to 400 degrees Fahrenheit. Slice the bell peppers into quarters, cutting away the core, stem and discarding any seeds. Arrange the quartered peppers over a clean work surface. Crush the garlic and finely dice the tomato. Add to a small mixing bowl. Add the Italian seasoning, salt and pepper. Mix well to combine.
Step 2
Divide the tomato mixture evenly between the prepared peppers. Arrange the filled peppers across a shallow oven tray. Cover the tray loosely with foil and transfer to the oven to bake for 20 minutes.
Step 3
Remove the foil from the tray. Divide the mozzarella evenly between the tops of the filled peppers. Return the tray to the oven uncovered for a further 12-15 minutes or until the peppers are tender and the cheese is melted and golden.