Cook the pastina according to the packet instructions. Trim and coarsely grate the carrot. A few minutes before the pasta is ready, carefully add the grated carrot to the pan. Meanwhile, finely grate the Parmesan into a bowl and mix with the ricotta. Drain the pasta and carrot, tip into the bowl and mix everything together, then serve to your little one.
For younger babies:
Leave out the Parmesan and blitz to a purée, pulse, mash and/or finely chop depending on the stage your little one is at