Potato Onion Casserole

Prep: 15 min Cook: 90 min Serves: 6 Cuisine: American

A hearty casserole combining tender potatoes and sweet onions layered with creamy Velveeta and topped with sharp cheese. Baked until bubbling and golden, this dish offers comforting flavors perfect for family dinners or potlucks, delivering creamy, cheesy goodness in every bite.

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Ingredients

  • 4-5 medium potatoes, peeled and sliced
  • 1 large onion, peeled and sliced
  • 6-8 slices Velveeta cheese
  • 2 (10 oz) cans mushroom soup
  • 1/2 tsp salt
  • 1/2 tsp pepper
  • 1 cup grated sharp cheese

Instructions

  1. Preheat oven to 350°F (175°C).
  2. In a 9x13-inch baking dish, layer sliced onions, potatoes, and slices of Velveeta cheese. Repeat the layers.
  3. Season with salt and pepper.
  4. Pour mushroom soup over the layered mixture, optionally diluted with 1/3 cup milk.
  5. Top with grated sharp cheese.
  6. Bake in the preheated oven for 1 hour and 30 minutes, or until potatoes are tender and bubbly.
  7. Test potatoes for doneness before serving.

Tips & Substitutions

For added flavor, consider using a mix of cheeses, such as cheddar or gouda, in place of some Velveeta. If you're short on time, you can use pre-sliced potatoes or even frozen hash browns. To enhance the dish, try adding cooked bacon or sautéed mushrooms between the layers. Ensure to cover the dish with aluminum foil for the first hour to prevent excessive browning.

Serving Suggestions

This Potato Onion Casserole pairs beautifully with a fresh green salad or steamed vegetables for a balanced meal. It can also serve as a hearty side dish alongside grilled meats or roasted chicken. Consider serving it with a dollop of sour cream or a sprinkle of fresh herbs for extra flavor. For a complete meal, serve it alongside Oven Apple Pancakes for a delightful brunch spread.

Storage & Reheating

Store any leftovers in an airtight container in the refrigerator for up to 3-4 days. To reheat, place in a preheated oven at 350°F (175°C) for about 20-30 minutes, or until heated through. You can also microwave individual portions for a quicker option, but be sure to cover them to retain moisture.

Nutrition & Diet Analysis (per serving)

Each serving of Potato Onion Casserole contains roughly 636 calories, with 12g protein, 82g carbohydrates, and 30g fat. It is an excellent source of vitamin C (38% of the Daily Value), potassium (30% of the Daily Value), and dietary fiber (25% of the Daily Value), and a good source of iron. Note that it is relatively high in sodium, at 1914mg per serving (83% of the Daily Value).

636 kcal 32% DV
Protein Fat Carbs

Macronutrients

Protein 11.6g 23% DV
Total Fat 29.6g 38% DV
Carbs 82.4g 30% DV
Fiber 6.9g 25% DV
Sugar 5.6g 11% DV

Electrolytes

Sodium 1914.3mg 83% DV
Potassium 1389.9mg 30% DV
Cholesterol 3.4mg 1% DV

Vitamins & Minerals

Vitamin A 3.9mcg
Vitamin C 34.3mg 38% DV
Calcium 55.3mg 4% DV
Iron 2.6mg 14% DV
Diet fit High-fiber
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 use different types of cheese in this casserole?

Yes, you can substitute Velveeta with other cheeses like cheddar, mozzarella, or gouda. Mixing different cheeses can enhance the flavor profile and add complexity to the dish. Just ensure the cheese melts well to achieve the desired creamy texture.

How can I make this dish vegetarian?

This casserole is already vegetarian as it primarily uses potatoes, onions, and cheese. To add more substance, consider incorporating vegetables like spinach, bell peppers, or zucchini. You can also use vegetable broth instead of mushroom soup for a lighter base.

Can I prepare this casserole ahead of time?

Absolutely! You can assemble the casserole a day in advance. Just cover it tightly with plastic wrap and store it in the refrigerator. When ready to bake, let it sit at room temperature for about 30 minutes before placing it in the oven to ensure even cooking.

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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