Dynamic type casting using reflection

I am new to reflection in .net. I have a method in a dll (Public Dictionary CollectData()), where CollectedHistory is a class in the same dll. THis class has 3 lists (List).

I am invoking this method from another assembly using reflection. And the result of this method has been assigned to a VAR object.

But, I am not clear, how can I type cast the output of this method in to DictionaryCollectData() method exists).

Please advise me, how to type cast the method output to the proper type using c# reflection.