Put the water, oil, sugar and yeast in the bowl, emulsify: 15 sec. speed 4.
Add the flour and salt, knead: 3 min. speed. dough mode.
Take the dough, knead it for a few minutes with your hands and leave to rise covered for at least 2 hours or in any case until it doubles in a dry place free of drafts (for all leavened products I opt for the oven turned off with the light on).
Dice the mozzarella and the cherry tomatoes.
Take back the dough, work it briefly with your hands and divide it into 12 pieces.
Roll out each piece in a sheet and distribute the filling on it.
Close each piece into balls and place them in paper cups.
Brush the surface with oil and let rise for another 20 minutes.
Sprinkle the muffins with rosemary as desired and bake in a preheated oven at 200°C for about 20 minutes.
Remove from the mold, let it cool and serve... Buon appetito!
As a filling you can opt for whatever you prefer, even ham and mozzarella or just vegetables.
If you replace mozzarella with a vegetable alternative, you will have muffins that are also suitable for vegans.
Those that are left over you can safely freeze them in food bags and defrost them as needed.