I sometimes use Nestle's Cerelac '8 Cereals with Honey'. It has no added sugars, but includes active BL bifidus, calcium, iron, zinc, vitamins A,C,D,E,K and B complex.
It is very easy to digest, but enough water should be added to make it a bit runny, as it thickens further when it cools, and it sets quite hard when it dries.