There was a time when a humble pan of baked potatoes could make a whole Sunday supper feel special, and this old-fashioned potato Lorraine is just that kind of dish. With only three main ingredients, it turns simple pantry staples into something creamy, cozy, and worthy of passing around the family table. It has that wonderful mid-century supper club feel, the sort of casserole many grandmothers in the Midwest kept in steady rotation because it was affordable, filling, and always welcome beside roast meats and garden vegetables.
Serve these potatoes with baked ham, roast chicken, pork chops, or a simple meatloaf, and you will have a supper that feels straight out of another era. A crisp green salad or buttered green beans help balance the richness, and if you are feeding a hungry table, a basket of warm dinner rolls fits right in. For a holiday meal, they sit especially nicely alongside glazed carrots, roast beef, or even a plain little plate of sliced tomatoes in summer.
Oven Baked 3-Ingredients Potato Lorraine
Servings: 6
Ingredients
2 pounds russet potatoes, peeled and thinly sliced
2 cups heavy cream
1 packet dry onion soup mix
Butter or cooking spray for greasing the baking dish
Directions
1. Preheat the oven to 350°F and lightly grease an oval ceramic casserole dish.
2. In a large bowl, combine the sliced potatoes, heavy cream, and dry onion soup mix. Toss gently until all the potato slices are well coated.
3. Spread the potato mixture evenly into the prepared casserole dish, making sure the slices settle into fairly even layers.
4. Cover the dish with foil and bake for 45 minutes. Remove the foil and continue baking for 25 to 35 minutes more, until the potatoes are tender and the top is golden brown.
5. Let the casserole rest for 10 minutes before serving so the creamy layers can settle and spoon out neatly.
Variations & Tips
Cheesy Supper Version: If you want to stretch beyond the original three-ingredient spirit, add 1 to 1 1/2 cups shredded Swiss or cheddar cheese between the layers or over the top during the last part of baking. It gives the casserole a richer, heartier feel that goes especially well with ham.
Best Potato Choice: Russet potatoes bake up soft and help create that creamy old-fashioned texture, but Yukon Golds work too if you prefer a slightly buttery flavor and firmer slices. Just try to cut them evenly so everything cooks at the same pace.
Make-Ahead Tip: You can assemble the casserole a few hours ahead, cover it, and refrigerate it until baking time. If it goes into the oven cold from the refrigerator, add another 10 to 15 minutes to the covered baking time.
Extra Browning Tip: For a deeper golden top, place the baked casserole under the broiler for 1 to 2 minutes at the very end, watching it carefully. That little bit of color makes the dish look just like the best church supper casseroles.