This old-fashioned oven baked canned tomato and potato scallop is the kind of thrifty, comforting casserole that has earned a place on Sunday supper tables for generations. With just a handful of pantry staples, it turns simple sliced potatoes and canned tomatoes into a bubbling, savory bake with tender layers, bright tomato flavor, and those irresistible browned edges that make homestyle casseroles so appealing.
Serve this dish alongside roast chicken, meatloaf, ham, pork chops, or simple sausages for a hearty meal. It also works well with buttered green beans, a crisp cucumber salad, braised greens, or warm crusty bread to soak up the tomato-rich juices, making it flexible enough for either a family supper or a casual potluck spread.
Oven Baked 4-Ingredient Canned Tomato and Potato Scallop
Servings: 6
Ingredients
4 medium russet potatoes, peeled and thinly sliced
Directions
1. Heat the oven to 375°F and lightly butter a medium baking dish or casserole dish.
2. Spread a thin layer of tomatoes with a little juice in the bottom of the dish, then add a layer of sliced potatoes and a layer of sliced onion. Season lightly with salt and black pepper.
3. Repeat the layers until all the potatoes, onions, and tomatoes are used, finishing with tomatoes on top. Dot the top evenly with the butter.
4. Cover the dish tightly 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 bubbling with lightly browned edges.
5. Let the casserole rest for 10 minutes before serving so the layers can settle and the juices thicken slightly.
Variations & Tips
Add a cheese topping: If you want a richer casserole, sprinkle a modest layer of shredded cheddar or Parmesan over the top during the last 10 minutes of baking. It is not traditional to the simplest 4-ingredient version, but it browns nicely and adds extra savoriness.
Use waxy potatoes for neater layers: Russets give a softer, more classic scalloped texture, but Yukon Gold potatoes hold their shape a bit better if you want cleaner slices when serving.
Season the layers lightly: Because the dish is so simple, even seasoning matters. A small pinch of salt and pepper on each layer gives better flavor than adding it all at once on top.
Slice evenly for even baking: Try to keep the potato slices about 1/8 inch thick so they cook at the same rate. If some slices are much thicker, the center of the casserole may take longer to become tender.
Boost the flavor carefully: A spoonful of chopped parsley, a pinch of dried thyme, or a little garlic can be added if you like, but keep the additions light so the straightforward tomato-and-potato character of the dish still comes through.
