Combine mozzarella, olive oil, Italian seasoning and salt in a small bowl.

Season to taste with pepper and marinate while you prepare tomatoes.

Slice each tomato crosswise, like an accordion, making sure not to cut all the way through.

Place cut tomatoes on a serving platter.

Insert marinated cheese slices and pieces of torn basil into each slit.

Drizzle tomatoes with balsamic glaze before serving.