This oven baked 3-ingredient canned peas and potato casserole is the kind of simple comfort food that stretches a handful of pantry staples into something warm, creamy, and deeply nostalgic. It has the feel of an old-fashioned family table recipe, especially the kind that shows up during summer when new potatoes are plentiful and supper needs to be easy, filling, and dependable. With just a few basic ingredients, it bakes into a soft, cozy casserole with tender potatoes, sweet peas, and a rich creamy texture.
Serve this casserole alongside baked ham, pan-fried pork chops, meatloaf, or simple roast chicken for a comforting family meal. It also works well with sliced tomatoes, cucumber salad, buttered rolls, or a crisp green salad to balance the creaminess. If you are putting together a casual summer supper, this dish fits right in next to grilled burgers or sausages too.
Oven Baked 3-Ingredient Canned Peas and Potato Casserole
Servings: 6
Ingredients
2 pounds potatoes, peeled and thinly sliced
2 cans peas, 15 ounces each, drained
1 can condensed cream of mushroom soup, 10.5 ounces
Directions
1. Preheat the oven to 350°F and lightly grease a medium glass baking dish.
2. Layer half of the sliced potatoes in the bottom of the baking dish, then scatter over half of the drained peas.
3. Spoon half of the condensed cream of mushroom soup over the peas and gently spread it across the surface. Repeat the layers with the remaining potatoes, peas, and soup.
4. Cover the dish tightly with foil and bake for 45 minutes. Remove the foil and continue baking for 20 to 30 minutes, or until the potatoes are fork-tender and the top is bubbling and lightly golden.
5. Let the casserole rest for 10 minutes before serving so the creamy layers can settle and scoop more neatly.
Variations & Tips
For extra creaminess: If you like a softer, looser casserole, stir 1/4 to 1/2 cup milk into the soup before layering. This helps the sauce spread more easily and creates a silkier texture as it bakes.
For picky eaters: Cut the potatoes very thin so they bake up extra tender, and spread the peas evenly between layers so every bite has a little without feeling overloaded. This is a nice way to keep the vegetable mild and familiar.
For a little more flavor: Even though the base recipe is wonderfully simple, a small sprinkle of black pepper, onion powder, or a pat of butter on top before baking can add an extra homemade touch if your family likes a little seasoning.
Make-ahead tip: Assemble the casserole earlier in the day, 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.
Potato tip: Russet potatoes give a softer, creamier casserole, while Yukon Gold potatoes hold their shape a bit better. Either works nicely, so use what you have on hand.