This humble oven baked 3-ingredient canned corned beef potato pie is the kind of thing my grandmother leaned on every spring when money was tight and the fields were still waking up. It’s built from the pantry and the root cellar: canned corned beef, potatoes, and a little milk to pull it all together. Nothing fancy, just a deep, comforting pie that turns a couple of cans and a sack of potatoes into a hot, golden dish that will feed a whole family. The top gets beautifully browned and crisp around the edges in the oven, while the inside stays soft and savory—exactly the sort of thrifty Midwestern cooking I grew up with.
Serve this corned beef potato pie straight from the glass pie dish while it’s still bubbling and golden on top. A simple side of buttered peas, green beans, or a tossed salad adds a bit of color and freshness to balance the richness. Slices of bread or dinner rolls are nice for scooping up the soft potatoes and crispy bits of corned beef around the edges. A spoonful of ketchup or a little prepared mustard on the side is very old-fashioned but surprisingly good with it, and a mug of hot coffee or iced tea makes it feel like a real farmhouse supper.
Oven Baked 3-Ingredient Corned Beef Potato PieServings: 6
Ingredients
2 (12-ounce) cans corned beef, chilled
2 1/2 pounds russet potatoes, peeled and cut into 1-inch chunks
1 cup whole milk (plus 1–2 tablespoons more if needed)
Directions
Preheat your oven to 400°F (200°C). Set a 9-inch glass pie dish on a baking sheet to catch any drips and make it easier to move in and out of the oven.
Place the peeled, chopped potatoes in a large pot and cover them with cold water by about 1 inch. Add a small pinch of salt if you like. Bring to a boil over medium-high heat, then reduce to a gentle boil and cook until the potatoes are very tender when pierced with a fork, about 12–15 minutes.
While the potatoes cook, open the cans of corned beef. Leave the meat chilled—it’s easier to crumble when cold. Use a fork to break it up into small chunks in a bowl so it’s ready to scatter over the pie.
When the potatoes are tender, drain them well in a colander, letting the steam escape for a minute so they’re not watery. Return the hot potatoes to the warm pot.
Pour in 1 cup of milk. Mash the potatoes with a potato masher until fairly smooth but still sturdy enough to hold shape in the pie. If the mixture seems too stiff to spread easily, add 1–2 tablespoons more milk, a little at a time, until you have a thick, spreadable mash. Taste and add a small pinch of salt only if needed—remember the corned beef is quite salty.
Spoon about half of the mashed potatoes into the glass pie dish and spread them into an even layer, pressing gently up the sides to form a simple bottom crust. It doesn’t have to be perfect—just make sure the bottom of the dish is covered.
Scatter all of the crumbled corned beef evenly over the mashed potato layer, breaking up any large clumps so every slice will have some meat.
Top with the remaining mashed potatoes, spreading gently from the center out to the edges to cover the corned beef completely. Use the back of a spoon or a fork to smooth the top, then lightly rough it up or drag the fork across the surface to make ridges—these will brown up and get crispy in the oven.
Place the pie dish (still on the baking sheet) into the preheated oven. Bake for 30–35 minutes, or until the top is lightly golden and the edges are browned and crisp where the potatoes meet the glass. You should see a little bubbling around the sides.
For extra color and crisp edges, you can move the pie to the top rack for the last 5 minutes of baking, keeping an eye on it so it doesn’t scorch. The top should be a warm golden brown with some darker, toasty bits on the ridges.
Remove the pie from the oven and let it rest for about 10 minutes before cutting. This helps it set up so you can lift out neat slices, with the golden top, savory corned beef layer, and soft potatoes underneath all holding together nicely.
Variations & Tips
If you have them on hand, you can dress this up without really changing its spirit. Stir a handful of shredded cheddar into the top layer of mashed potatoes before spreading, or sprinkle a light layer over the surface for an extra golden crust. For a little onion flavor without adding more ingredients, simmer a quartered onion with the potatoes, then discard the onion before mashing; it will leave a gentle sweetness behind. You can also swap some of the milk for evaporated milk or a splash of cream if you want a richer pie. If your family prefers a crisper top, brush a tablespoon of milk over the potatoes before baking to encourage browning, or run the pie under the broiler for 1–2 minutes at the end, watching constantly. Leftovers reheat well: cool them quickly, cover, and refrigerate within 2 hours of baking. Reheat in a 350°F (175°C) oven until hot all the way through (165°F/74°C in the center). Because this uses canned corned beef, store unopened cans in a cool, dry place and check dates before using. Once opened, keep any unused corned beef refrigerated in a covered container and use within a couple of days. Always handle the hot glass pie dish carefully—place it on a dry towel or trivet, not a cold or wet surface, to avoid cracking.
