Storing mapreduce results

I'm writing an application with Node.js, Express and Mongo. On each page I should show information, which I collect with MapReduce.

UPD: More Information :) I don't understand, how I should process this data - store it into collection or what? I have a lot of pages, on every page I have a sidebar with results of map reduce(kind of statistic). This results aren't changing very often, so I don't need recount it on every page load. And I want to find a true way for this task)