Irish Potato Casserole(Microwave)

Prep: 10 min Cook: 25 min Serves: 8 Cuisine: American

A creamy microwave potato casserole with tender sliced potatoes, onions, and a savory mushroom soup sauce, perfect for quick family dinners or comforting gatherings.

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Ingredients

  • 8 medium white potatoes, thinly sliced
  • 1 tsp salt
  • 1/4 tsp pepper
  • 1 onion, sliced
  • 1 can cream of mushroom soup
  • 1 1/2 cups milk

Instructions

  1. Place half of the sliced potatoes in a 12 x 8-inch glass baking dish. Sprinkle with salt and pepper.
  2. Add half the sliced onion over the potatoes.
  3. Combine the cream of mushroom soup and milk to make the sauce.
  4. Pour half of the soup mixture over the layered potatoes and onions.
  5. Repeat with remaining potatoes, onions, and the soup mixture.
  6. Cover the dish with plastic wrap, vent, and microwave on High for 20 to 25 minutes.
  7. Rotate the dish 1/2 turn after 10 minutes of cooking.
  8. Let stand, covered, for 3 to 5 minutes before serving.

Tips & Substitutions

For a creamier texture, consider using half-and-half instead of milk. If you want to add some extra flavor, try incorporating garlic powder or a sprinkle of cheese between the layers. You can also use sweet potatoes for a twist on this classic dish. Always ensure the potatoes are sliced uniformly for even cooking.

Serving Suggestions

This Irish Potato Casserole pairs beautifully with grilled meats or a fresh salad, such as Red And White Delight Salad, for a complete meal. Consider serving it alongside crusty bread to soak up any sauce. It also makes a fantastic side dish for holiday gatherings or potlucks.

Storage & Reheating

Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, cover the casserole with a damp paper towel and microwave on medium power for 2-3 minutes, checking to ensure it heats evenly. Alternatively, you can reheat it in an oven at 350°F until warmed through.

Nutrition & Diet Analysis (per serving)

Each serving of Irish Potato Casserole(Microwave) contains roughly 131 calories, with 4g protein, 26g carbohydrates, and 2g fat. It is an excellent source of vitamin C (101% of the Daily Value), and a good source of dietary fiber and potassium. Note that it is relatively high in sodium, at 933mg per serving (41% of the Daily Value).

131 kcal 7% DV
Protein Fat Carbs

Macronutrients

Protein 3.6g 7% DV
Total Fat 2.1g 3% DV
Carbs 25.9g 9% DV
Fiber 4.5g 16% DV
Sugar 9.1g 18% DV

Electrolytes

Sodium 933.1mg 41% DV
Potassium 563.6mg 12% DV
Cholesterol 0.8mg

Vitamins & Minerals

Vitamin A 43.4mcg 5% DV
Vitamin C 91.1mg 100% DV
Vitamin D 0.2mcg 1% DV
Calcium 76.1mg 6% DV
Iron 1.6mg 9% DV
Diet fit Under 400 cal Low-fat
Contains Milk

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I make this casserole ahead of time?

Yes, you can prepare this casserole a day in advance. Simply layer the ingredients in the dish, cover tightly, and refrigerate. When ready to cook, microwave it straight from the fridge, increasing the cooking time by a few minutes if needed.

What can I substitute for cream of mushroom soup?

If you're looking for a substitute, you can use homemade cream of mushroom soup or try cream of chicken soup for a different flavor. For a vegetarian option, consider using a creamy vegetable soup or a homemade roux with vegetable broth.

How can I make this recipe gluten-free?

To make this Irish Potato Casserole gluten-free, simply ensure that the cream of mushroom soup is gluten-free or make your own using cornstarch or gluten-free flour as a thickening agent. Always check labels on your ingredients to avoid gluten.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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