Slicing the potatoes thinly is important here. Thin, even rounds become tender in the milk while thicker pieces can still be firm by the time the top of the casserole is browned.
Give the finished bake about 10 minutes to rest before serving. The hot milk and potato starch settle together slightly, making the casserole easier to portion.
You genuinely need only three main ingredients: Spam, potatoes, and milk. It’s an especially useful recipe when you want something hearty without a long grocery list.
There’s also very little preparation beyond slicing and layering. Everything goes directly into one baking dish and cooks together in the oven.
The combination works because the Spam provides plenty of salty, savory flavor while the potatoes keep the casserole mild and comforting. The milk adds moisture and helps the potato layers become soft and tender.
Ingredients You’ll Need
You only need three ingredients:
- Spam
- Russet potatoes
- Milk
How To Make 3-Ingredient Spam Potato Bake
Step 1: Preheat the oven to 350°F and lightly grease a medium glass baking dish.
Step 2: Peel the Russet potatoes and slice them into thin, even rounds. Cut the Spam into thin slices as well.
Step 3: Arrange half of the potato rounds across the bottom of the prepared baking dish, overlapping them slightly as needed.
Step 4: Layer half of the Spam slices over the potatoes. Add the remaining potatoes, followed by the remaining Spam, creating even layers throughout the casserole.
Step 5: Slowly pour the milk evenly over the entire dish, moving around the casserole so the liquid can work its way between the potato and Spam layers.
Step 6: Cover the baking dish tightly with aluminum foil and bake for 1 hour. The covered baking time traps steam and helps the potatoes become tender.
Step 7: Carefully remove the foil and return the casserole to the oven for another 20–30 minutes, until the potatoes are fork-tender and the exposed edges are lightly browned.
Step 8: Remove the casserole from the oven and let it rest for 10 minutes before serving.
3-Ingredient Spam Potato Bake Variations
Cheesy Spam Potato Bake
Add shredded cheddar between the layers and over the top if you don’t mind taking the recipe beyond three ingredients.
Onion Spam Potato Bake
Add thinly sliced sweet onion between the potatoes and Spam for extra savory flavor.
Garlic Potato Bake
Add a little garlic powder to the milk before pouring it over the casserole.
Extra-Crispy Spam Potato Bake
Once the potatoes are completely tender, give the uncovered casserole a few additional minutes in the oven for more browned edges.
Creamy Spam Potato Bake
Replace part of the milk with heavy cream for a richer, thicker finished casserole.
Storing 3-Ingredient Spam Potato Bake
Let leftovers cool, then transfer them to an airtight container or tightly cover the baking dish. Refrigerate within two hours and use within about 3–4 days.
How Thin Should I Slice The Potatoes?
Aim for approximately ⅛-inch-thick rounds. Thin, consistent slices cook much more evenly and become tender within the suggested baking time.
Do I Need To Cook The Potatoes First?
No. The potatoes go into the casserole raw and cook directly in the milk while the dish is covered.
Do I Need To Cook The Spam First?
No. Spam is already fully cooked, so you can slice it straight from the can and layer it into the casserole.
Why Are My Potatoes Still Firm?
They may have been sliced too thickly or unevenly. Cover the casserole again and continue baking until a fork slides easily through the center potatoes.
Why Is The Casserole Covered For The First Hour?
Covering traps moisture and steam inside the baking dish, which helps the raw potatoes cook through without the exposed Spam and potato edges becoming too dark.
Can I Make This Ahead?
You can assemble it shortly before baking, but I wouldn’t leave raw sliced potatoes sitting in milk for an extended period. For the best appearance and texture, assemble and bake relatively close together.
Reheat individual portions in the microwave or cover a larger portion and warm it in a 350°F oven until thoroughly hot. Uncover toward the end if you want the exposed edges to regain some texture.
What To Serve With 3-Ingredient Spam Potato Bake
- Green beans: Their simple, fresh flavor balances the savory Spam and soft potato layers.
- Roasted broccoli: Crisp-edged broccoli gives you a nice contrast to the tender casserole.
- Fresh salad: A green salad with a tangy vinaigrette adds something lighter alongside the hearty potatoes.
- Roasted carrots: Their natural sweetness works nicely with the salty, savory Spam.
- Steamed vegetables: Broccoli, cauliflower, or mixed vegetables make an easy side without adding another rich dish.
- Dinner rolls: Warm rolls are useful for soaking up any creamy milk sauce left on the plate.
Slice the potatoes as evenly as possible. With such a simple casserole, consistent potato thickness is one of the biggest factors in getting everything perfectly tender at the same time.
And don’t skip the covered portion of the baking time. The trapped steam is what allows those raw potato layers to soften before the final uncovered bake adds color around the edges.
3-Ingredient Spam Potato Bake
Ingredients
- 1 can Spam sliced into thin pieces
- 4 medium Russet potatoes peeled and sliced into thin rounds
- 1 cup milk
Instructions
- Preheat the oven to 350°F and lightly grease a medium glass baking dish.
- Peel the potatoes and slice them into thin, even rounds. Slice the Spam into thin pieces.
- Layer half of the potato rounds in the bottom of the baking dish, then add half of the Spam slices.
- Repeat with the remaining potatoes and Spam to create even layers.
- Pour the milk evenly over the casserole.
- Cover tightly with foil and bake for 1 hour.
- Remove the foil and bake for another 20–30 minutes, until the potatoes are fork-tender and the exposed edges are lightly browned.
- Let the casserole rest for 10 minutes before serving.
Nutrition
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