My grandmother used to make this growing up during the summer months and it was always fork tender and filling. Just 3 simple ingredients from the pantry.

This Oven-Baked Canned Corned Beef Potato Bake layers tender sliced potatoes, sweet onions, and savory corned beef into a hearty, comforting casserole. Baked low and slow under foil before crisping on top, this easy three-ingredient dish creates rich, golden layers that scoop out beautifully.
Oven-Baked 3-Ingredient Canned Corned Beef Potato Bake
Ingredients
| Ingredient | Quantity |
|---|---|
| Canned corned beef | 2 (12-ounce) cans |
| Large russet potatoes, peeled and thinly sliced | 4 |
| Medium onion, thinly sliced | 1 |
Step-by-Step Directions
- Preheat and prep – Set your oven to 375°F and lightly grease a glass baking dish.
- Layer the ingredients – Spread an even layer of sliced potatoes across the bottom of the dish, followed by a layer of sliced onions, then a layer of shredded corned beef. Repeat the layers until all the ingredients are used, finishing with a final layer of potatoes on top.
- Bake covered – Cover the dish tightly with foil and bake for 1 hour, allowing the potatoes to steam and soften.
- Uncover and brown – Remove the foil and bake uncovered for an additional 20 to 30 minutes, until the potatoes are fork-tender and the top edges are crisp and nicely browned.
- Rest and serve – Let the bake rest for about 10 minutes so the layers settle, then scoop and serve warm.




