4. Arrange the potato slices evenly in the prepared baking dish, creating an even layer.
5. Slowly pour the creamy onion mixture over the potatoes, making sure it reaches all the layers. Gently press the potatoes down with a spoon so they absorb the sauce.
6. Sprinkle a little extra Parmesan cheese over the top for an irresistible golden crust.
7. Cover the dish tightly with aluminum foil and bake for 45–55 minutes, or until the potatoes begin to soften.
8. Remove the foil and continue baking for another 15–20 minutes, until the top is golden brown, bubbling, and the potatoes are perfectly tender.
9. Let the casserole rest for about 10 minutes before serving. This helps the creamy sauce thicken and makes serving much easier.
Serving Ideas
This creamy potato casserole pairs wonderfully with roasted chicken, grilled steak, pork chops, baked ham, or meatloaf. Add steamed vegetables or a fresh green salad to balance the richness, and serve with warm crusty bread to soak up every bit of the delicious creamy sauce.
Helpful Tips
– Slice the potatoes as evenly as possible so they cook at the same rate.
– A mandoline slicer makes the job much easier and creates uniform slices.
– For extra flavor, add shredded cheddar, Gruyère, or mozzarella to the cream mixture.
– You can mix in cooked bacon, mushrooms, spinach, or diced ham to turn it into a complete meal.
– Prepare the casserole several hours ahead, refrigerate it, and bake just before serving.
– Leftovers keep well in the refrigerator for up to three days and reheat beautifully in the oven or microwave.
This rich, creamy potato bake is simple enough for a weeknight dinner yet impressive enough for family gatherings and holiday meals. With its crispy golden top, velvety cheese sauce, and tender potato layers, it’s a timeless comfort-food recipe that’s guaranteed to become a family favorite.
