Pasta Fagioli with pancetta

olive oil 200g pancetta (optional) 1-2 garlic cloves 1 sprig of fresh rosemary 2-3 canned tomatoes with their juice 2 small cans of cannellini beans grated[...]

2 tablespoons extra virgin olive oil 4 slices pancetta , chopped 1 medium onion , chopped 1 carrot , peeled and chopped 2 stalks celery , chopped 1 bay leaf 3[...]