The first one is not too bad - I cooked the lentils a bit in the microwave before adding. However, the other half ate it but didn't vote for "again". The quantity was not stated on the recipe but I would say about 4. I guess I'll have to eat the leftovers :/
I think you could look into maintenance training eg http://www.runnersworld.com/race-training/maintenance-training. Also I think Hal Higdon's website has some plans for maintaining fitness between marathons that could be adapted. Or you could train for a slight variation like the Stockport 10 miler in December.