Place the water, rice and pasta sauce into a large heavy saucepan, and simmer for 10 mins. Add all the prepared vegetables apart from the tomatoes and beans and simmer for another 10 mins. Now add the tomatoes and mixed beans and simmer for another 5 minutes.
At this point test the rice, it should now be tender, if not just add a little more water if necessary and simmer for a little longer till tender. Lastly, add the parmesan cheese and stir in thoroughly.
Place the mixture in a large oven dish and top with the cheddar cheese and bake for 15- 20 minutes until golden brown.