There are some dishes that come from celebration, and others that come from making do with what was in the pantry, and this oven baked 3-ingredient canned kidney bean potato casserole surely belongs to the second kind. It is humble, filling, and wonderfully comforting, the sort of practical supper many Midwestern grandmothers knew by heart. With just potatoes, canned kidney beans, and a can of condensed cream soup, this casserole bakes into a soft, creamy dish with browned edges and plenty of old-fashioned comfort in every scoop.
This casserole is satisfying enough to stand on its own with a slice of buttered bread or toast on the side, but it also goes nicely with simple cooked greens, a crisp cucumber salad, or stewed tomatoes if you want a little brightness beside the creamy potatoes and beans. For a heartier table, it pairs well with baked ham, sausage, or meatloaf, though it is plenty sturdy as a meatless main dish for a thrifty weeknight supper.
Oven Baked 3-Ingredient Canned Kidney Bean Potato Casserole
Servings: 6
Ingredients
4 medium russet potatoes, peeled and thinly sliced
2 cans (15 ounces each) kidney beans, drained
1 can (10.5 ounces) condensed cream of mushroom soup
Directions
1. Preheat the oven to 375°F and lightly grease a medium glass baking dish.
2. Place half of the sliced potatoes in the baking dish, then spoon over half of the drained kidney beans and half of the condensed soup. Spread the soup as evenly as you can, then repeat the layers with the remaining potatoes, beans, and soup.
3. Cover the dish tightly with foil and bake for 45 minutes.
4. Remove the foil and continue baking for 25 to 35 minutes more, until the potatoes are fork-tender and the top is bubbling with golden browned edges.
5. Let the casserole rest for 10 minutes before serving so the layers can settle and the creamy sauce can thicken slightly.
Variations & Tips
Soup swap: If cream of mushroom is not your family’s favorite, cream of celery or cream of chicken will work much the same way and still give you that creamy old-fashioned casserole texture.
Add a little liquid if needed: If your potatoes are sliced a bit thick or your soup is especially dense, stir 1/2 cup water into the soup before layering. That little bit of extra moisture helps the potatoes soften nicely as the casserole bakes.
Slice evenly: The thinner and more even the potato slices, the more evenly the casserole cooks. A sharp knife or mandoline makes the job easier and helps avoid hard spots in the center.
Make it heartier: While the original beauty of this dish is its thrift and simplicity, you can stretch it for a larger family by adding a layer of browned onion or a bit of cooked ground beef if you happen to have it on hand.
Storage tip: Leftovers keep well in the refrigerator for up to 3 days. Reheat covered in the oven or in the microwave until the potatoes are heated through and creamy again.