I call this a casserole and not a souffle. The egg whites will puff up a bit during cooking, but for this recipe to be called a souffle, it would need to have more egg whites to overcome thickness of the pumpkin and the mascarpone. In this casserole, the fluff and creaminess are in perfect balance. Let me know what you think!
Keyword creamy, mascarpone, pumpkin, squash