Buffet Onion Casserole
A hearty onion casserole layered with cheese, potato chips, and creamy mushroom soup, baked to perfection. Perfect for casual family dinners and comfort food lovers.
Ingredients
Instructions
- Grease a 9 x 13-inch pan or an equivalent baker.
- Layer half of the sliced onions, half of the grated cheese, and half of the potato chips in the prepared pan.
- Whip up one can of cream of mushroom soup and pour it over the layered ingredients.
- Repeat the layers with the remaining onions, chips, and cheese.
- Mix the second can of cream of mushroom soup with the 1/2 cup of milk and pour over the top.
- Bake at 350°F for 1 hour until bubbly and golden.
Tips & Substitutions
For a richer flavor, consider using caramelized onions instead of raw. You can substitute the cream of mushroom soup with homemade versions or other creamy soups like cream of celery. If you're looking for a lighter option, use low-fat cheese or non-dairy alternatives. To enhance the dish, add herbs like thyme or a sprinkle of paprika for a hint of spice.
Serving Suggestions
This casserole is perfect as a hearty side dish for gatherings and pairs beautifully with grilled meats or a fresh salad. For a complete meal, serve alongside roasted vegetables or a light soup. It can also be enjoyed as a main dish, especially when complemented with a side of Traditional Oatmeal Cookies for dessert.
Storage & Reheating
Store any leftovers in an airtight container in the refrigerator for up to three days. To reheat, place the casserole in a preheated oven at 350°F until warmed through, about 20-25 minutes. You can also microwave individual servings, but the oven will help maintain the crispiness of the potato chips.
Nutrition & Diet Analysis (per serving)
Each serving of Buffet Onion Casserole contains roughly 579 calories, with 10g protein, 86g carbohydrates, and 23g fat. It is an excellent source of vitamin C (123% of the Daily Value), iron (31% of the Daily Value), and dietary fiber (24% of the Daily Value), and a good source of vitamin A and potassium. Note that it is relatively high in sodium, at 1460mg per serving (63% of the Daily Value).
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 the casserole a day in advance. Assemble the layers, cover tightly with foil, and refrigerate. When ready to bake, remove from the fridge and let it sit at room temperature for about 30 minutes before baking. This ensures even cooking and helps the flavors meld.
Can I use different types of cheese?
Absolutely! Feel free to experiment with different types of cheese based on your preference. Cheddar, Monterey Jack, or even a blend of cheeses can work well. Just be mindful of the flavor profile; stronger cheeses will intensify the dish's richness.
Is this recipe suitable for vegetarians?
Yes, this casserole is vegetarian-friendly as it contains no meat. Just ensure that your cream of mushroom soup is made without any animal products. It's a great dish to serve at gatherings, allowing everyone to enjoy a hearty, satisfying meal.
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).