This apple cinnamon dump cake is at its best served warm, when the edges are just a bit caramelized and the center is soft and saucy. A scoop of vanilla ice cream is the classic pairing—the cold cream melts into the warm apples and cake, creating an instant sauce. Lightly sweetened whipped cream or a dollop of vanilla Greek yogurt works nicely if you prefer something a bit lighter. For contrast, serve it alongside something crisp and fresh, like sliced pears or a simple green salad if you’re turning this into part of a brunch spread. A mug of strong coffee, black tea, or a spiced chai also complements the cinnamon and apple notes beautifully.