Halve the tomatoes, remove the stalk and hollow out. Grate the pecorino, peel the garlic cloves. Mix the pecorino and butter in a blender, then press in the garlic cloves.
First dice the mozzarella, then put it in the blender with the basil. Use the knife insert to grind to a thick paste. Then season with salt and pepper.
Pour the paste into the hollowed out tomato halves and place in a baking dish. Gratinate at 180 ° C for about 20 minutes.
Goes well with Italian dishes or fresh romaine lettuce.