Impossible pies were popular years ago, either savoury or sweet.  The magic of these pies was that it formed it's own base and filling.  I had made a Broccoli and Cheese impossible pie, but since the recipe required Bisquick or one could make this mix, but the recipe yielded a large amount.  
In following a food page on Facebook where handwritten recipes are posted, I came across the two recipes posted below that I used to compare.  I like the name of Coconut Custard  Pie better. 
The third recipe, is what I modified and filled a very large nine inch pie plate.  It really didn't need to be done in a Food Processor, as one could easily whisk the ingredients.  It did need to be baked at a lower temperature.  Also half way through the baking temperature, cover with foil.