This oven baked 3-ingredient canned mushroom soup potato bake is the kind of simple, dependable comfort food that earns a permanent spot in the family recipe box. With tender layers of potatoes, creamy mushroom soup, and milk baked together until bubbly and golden around the edges, it delivers that old-fashioned Sunday dinner feeling with hardly any fuss. It is a budget-friendly casserole with roots in classic home cooking, where pantry staples and a bag of potatoes could turn into something warm and satisfying for everyone at the table.
Serve this potato bake alongside baked ham, meatloaf, roast chicken, pork chops, or simple sausage links for an easy family meal. It also goes nicely with green beans, peas, a crisp side salad, or buttered corn to balance the richness. If you are putting together a holiday or potluck spread, this dish fits right in next to other cozy casseroles and roasted vegetables.
Oven Baked 3-Ingredient Canned Mushroom Soup Potato Bake
Servings: 6
Ingredients
2 pounds russet or Yukon Gold potatoes, peeled and thinly sliced
1 can (10.5 ounces) condensed cream of mushroom soup
1 cup milk
Directions
1. Preheat the oven to 350°F and lightly grease a medium glass baking dish.
2. In a large bowl, whisk together the condensed mushroom soup and milk until smooth and creamy.
3. Layer half of the sliced potatoes in the prepared baking dish, then pour over half of the soup mixture. Repeat with the remaining potatoes and soup mixture, spreading it as evenly as you can.
4. Cover the dish tightly with foil and bake for 60 minutes. Remove the foil and continue baking for 20 to 30 minutes more, or until the potatoes are fork tender and the top is bubbling with golden brown edges.
5. Let the potato bake rest for 10 to 15 minutes before serving so the sauce can settle and the slices hold together better.
Variations & Tips
For extra flavor: If you are willing to go beyond the three basic ingredients, add a little black pepper, dried onion flakes, garlic powder, or a small handful of shredded cheddar on top during the last few minutes of baking. Those little extras make it feel even more special.
For even cooking: Slice the potatoes as thinly and evenly as possible so they soften at the same rate. A mandoline works well, but a sharp knife does the job too. Thicker slices may need extra baking time.
For picky eaters: Use Yukon Gold potatoes for a naturally buttery flavor and softer texture. If someone in the family does not love mushroom pieces, choose a smoother condensed soup or whisk the soup very well before layering.
Make-ahead tip: Assemble the casserole a few hours ahead, cover, and refrigerate until baking time. If it goes into the oven cold from the refrigerator, add about 10 extra minutes to the covered baking time.
To prevent curdling or dryness: Be sure the dish stays covered for the first part of baking so the potatoes steam and soften in the sauce. If the top starts browning too quickly after uncovering, loosely lay the foil back over the dish until the center finishes cooking.