Mushroom And Onion Casserole

Prep: 15 min Cook: 40 min Serves: 4 Cuisine: American

A creamy mushroom and onion casserole with a savory blend of cottage cheese and sour cream, perfect for comforting family meals or entertaining guests.

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Ingredients

  • 1 Tbsp. vegetable oil
  • 4 green onions, chopped
  • 4 oz. sliced mushrooms
  • 1 c. low-fat cottage cheese
  • 1 c. sour cream
  • 6 eggs
  • 2 Tbsp. all-purpose flour
  • salt to taste
  • pepper to taste

Instructions

  1. Preheat oven to 350°F.
  2. Grease a 1-quart shallow baking dish.
  3. Saute chopped green onions and sliced mushrooms in vegetable oil until tender.
  4. Set aside the sautéed vegetables.
  5. In a blender, process cottage cheese until almost smooth.
  6. Add sour cream, eggs, flour, salt, pepper, and hot pepper sauce to the blender.
  7. Process until well combined.
  8. Stir in the sautéed onions and mushrooms.
  9. Pour the mixture into the prepared baking dish.
  10. Bake for 40 minutes or until set.

Tips & Substitutions

For a creamier texture, blend the cottage cheese until completely smooth. If you need a gluten-free option, substitute the all-purpose flour with a gluten-free flour blend. You can also add grated cheese like cheddar or mozzarella for extra flavor. For added heat, a dash of hot pepper sauce can be included in the mixture.

Serving Suggestions

This Mushroom and Onion Casserole is perfect as a hearty breakfast or brunch dish. Serve it alongside a fresh green salad or with crusty bread for a complete meal. It also pairs beautifully with Tasty Rice Dish for a comforting dinner option.

Storage & Reheating

Store any leftovers in an airtight container in the refrigerator for up to three days. To reheat, simply place portions in the microwave until heated through, or warm in the oven at 350°F until hot, which helps maintain the dish's texture.

Nutrition & Diet Analysis (per serving)

Each serving of Mushroom And Onion Casserole contains roughly 601 calories, with 19g protein, 118g carbohydrates, and 7g fat. It is an excellent source of vitamin D (79% of the Daily Value), protein (38% of the Daily Value), and iron (36% of the Daily Value), and a good source of dietary fiber and calcium. Note that it is relatively high in sodium, at 823mg per serving (36% of the Daily Value).

601 kcal 30% DV
Protein Fat Carbs

Macronutrients

Protein 18.9g 38% DV
Total Fat 6.9g 9% DV
Carbs 117.8g 43% DV
Fiber 5.3g 19% DV
Sugar 4.5g 9% DV

Electrolytes

Sodium 822.9mg 36% DV
Potassium 915.2mg 19% DV
Cholesterol 160.6mg 54% DV

Vitamins & Minerals

Vitamin A 117.4mcg 13% DV
Vitamin C 20.6mg 23% DV
Vitamin D 15.8mcg 79% DV
Calcium 251.3mg 19% DV
Iron 6.5mg 36% DV
Diet fit High-fiber Low-fat
Contains Milk Egg Wheat/Gluten

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 mushrooms in this casserole?

Yes, you can use a variety of mushrooms such as cremini, shiitake, or even portobello for a richer flavor. Just ensure they are well-sautéed to release their moisture before adding to the mixture.

Is it possible to make this casserole ahead of time?

Absolutely! You can prepare the casserole up to the baking step, cover it tightly, and refrigerate for up to 24 hours. Just add a few extra minutes to the baking time when you're ready to cook it.

Can I add other vegetables to this recipe?

Certainly! Feel free to incorporate spinach, bell peppers, or zucchini for added nutrition and flavor. Just sauté them along with the onions and mushrooms before mixing them into the casserole.

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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