I think pumpkin porridge (“garbuzova kasha” or “tykvennaja kasha”) is somewhat unusual dish in this part of the globe.
But it is quite popular in slavic world. My grandma always cooked it at fall, with milk and millet and, of course, pumpkin.
Raisins are nice addition to the recipe, all though they are optional, so are walnuts or dried apricots.
Cooking millet may take some time (and liquid). If you need to speed things up a bit, rinse millet seeds in couple of changes of warm water, or even let them soak in water for some time before cooking.