Onion In Mushroom Sauce

Prep: 10 min Cook: 25 min Serves: 4 Cuisine: American

A creamy mushroom sauce with tiny onions, topped with melted cheese and crispy crumbs, ideal for comforting family dinners or special gatherings.

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Ingredients

  • 2 c. small whole onions
  • 1 can cream of mushroom soup
  • 3 Tbsp. milk
  • 1/2 c. grated sharp cheese
  • 1 c. toasted crumbs or croutons

Instructions

  1. Cook the small whole onions until tender.
  2. Combine the cream of mushroom soup and milk in a bowl.
  3. Pour the soup mixture over the cooked onions.
  4. Sprinkle grated sharp cheese on top.
  5. Add toasted buttered crumbs or croutons over the cheese.
  6. Bake at 350°F for about 25 minutes, or until the cheese melts and the topping is golden.

Tips & Substitutions

For a richer flavor, sauté the onions in butter before cooking them until tender. You can substitute the cream of mushroom soup with a homemade version using sautéed mushrooms and heavy cream for a fresher taste. If you're looking for a lighter option, consider using low-fat cheese or a dairy-free alternative. This dish also works well with added spices like thyme or garlic powder for an extra kick.

Serving Suggestions

This flavorful dish pairs beautifully with a simple green salad or steamed vegetables to balance the richness. Consider serving it alongside grilled chicken or fish for a complete meal. For a comforting vegetarian option, serve it alongside a warm bowl of Broccoli Casserole(6 To 8 Servings) to round out your dinner table.

Storage & Reheating

Leftover Onion in Mushroom Sauce can be stored in an airtight container in the refrigerator for up to three days. To reheat, place it in a covered dish in the oven at 350°F for about 15 minutes, or until heated through. You can also microwave it in short intervals, stirring in between to ensure even heating.

Nutrition & Diet Analysis (per serving)

Each serving of Onion In Mushroom Sauce contains roughly 410 calories, with 8g protein, 59g carbohydrates, and 16g fat. It is an excellent source of calcium (26% of the Daily Value) and iron (23% of the Daily Value), and a good source of protein and vitamin A. Note that it is relatively high in sodium, at 474mg per serving (21% of the Daily Value).

410 kcal 21% DV
Protein Fat Carbs

Macronutrients

Protein 8g 16% DV
Total Fat 16.2g 21% DV
Carbs 59.2g 22% DV
Fiber 1.1g 4% DV
Sugar 31.7g 63% DV

Electrolytes

Sodium 473.7mg 21% DV
Potassium 257.5mg 5% DV
Cholesterol 8.7mg 3% DV

Vitamins & Minerals

Vitamin A 132.6mcg 15% DV
Vitamin C 10.1mg 11% DV
Vitamin D 1mcg 5% DV
Calcium 337.5mg 26% DV
Iron 4.2mg 23% DV
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 dish in advance?

Yes, you can prepare the dish up to the baking step and store it in the refrigerator for up to 24 hours. When ready to serve, simply bake it as directed, adding a few extra minutes if it's coming straight from the fridge.

What can I substitute for the sharp cheese?

If you don't have sharp cheese, you can use medium cheddar, mozzarella, or even a dairy-free cheese alternative. Each will give a slightly different flavor, but they will still complement the mushroom sauce well.

Can I add other vegetables to this recipe?

Absolutely! Feel free to incorporate other vegetables such as bell peppers, spinach, or even sautéed mushrooms for added texture and flavor. Just make sure they are cooked prior to adding them to the dish 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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