Cut off the stem of the Arol tomato and slice the top.
Scoop out the inside of the tomato with a spoon.
Heat olive oil in a pan and sauté the tomato pulp over medium heat.
Season with salt and pepper.
Stuff the sautéed pulp back into the tomato.
Top with mozzarella cheese and bake in the oven at 180°C for 10 minutes.