so they cook at the same rate.
Layer the potatoes in the dish: Arrange the sliced potatoes evenly in the greased glass casserole dish, spreading them out so there are no big clumps. It doesn’t have to be perfect—just aim for an even layer or two so the creamy pour-over can reach everything.
Pour the creamy mixture over the potatoes: Give the creamy pour-over a quick stir, then slowly pour this one creamy mixture all over the raw potatoes in the glass casserole dish, making sure to distribute the onions
