Easy Mushroom Onion Soup Recipe (2024)

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This is a mushroom onion soup that's packed with flavor and easy to make, so you can whip together a batch in no time. You make it with earthy mushrooms and sweet caramelized onions, which add flavorful taste and nourishment that warms the bones deep to the soul.

Easy Mushroom Onion Soup Recipe (1)

A fragrant caramelized mushroom and onion soup that keeps you warm and full! It is packed with savory flavor and a thick broth making it the perfect food for a cold night or a casual dinner. Serve this easy soup with toasted gluten-free bread and gluten-free cornbread muffins for a complete meal.

Jump to:
  • About this soup
  • Key ingredients
  • Variations
  • How to make mushroom and onion soup
  • Equipment
  • Storing mushroom onion soup
  • Top tip for prepping soup and meals
  • Recipe FAQs
  • What to serve with mushroom soup
  • More delicious soup and mushroom recipes
  • 📖 Recipe
  • Food safety

About this soup

This mushroom onion soup is so simple and full of flavor! The recipe was inspired by having mushrooms and onions around the house! It uses simple ingredients, like my tomato basil soup on this site, and pairs well with my gluten-free breadsticks and fresh batch of homemade sweet bread rolls. Mushroom onion soup is easy enough for anyone to make and a must-have for the home cook!

Key ingredients

I chose the simplicity of cremini or button white mushrooms that you can easily find in the grocery store. Vidalia onions are sweeter than yellow onion, white onions, and red onions so they add a beautiful sweetness combined with the earthy taste of mushrooms.

Try topping mushroom onion soup with a sprinkle of truffle zest or shaved black or white truffles!

Easy Mushroom Onion Soup Recipe (2)
  • butter - you can use vegan butter
  • Cremini mushrooms
  • Vidalia onions
  • garlic cloves
  • cornstarch
  • broth - beef broth, vegetable broth, bone broth, or chicken broth
  • dry white wine
  • tomato paste
  • pink Himalayan salt
  • black pepper
  • fresh parsley leaves

See recipe card for quantities.

Variations

Looking for a little extra heartiness in mushroom and onion soup? Try this satisfyingly delicious variations!

  • French mushroom onion soup - after the soup is cooked, place some soup in 16 ounce ramekins on a baking sheet. Top with a slice of swiss cheese or Haveri cheese then a slice of bread. Bake in the oven at 350 degrees F until the cheese melts and the top of the bread is crisp.
  • Deluxe - add cooked sausage like chicken sausage cut into slices or coins. Or add turkey meatballs to the soup. You can also add shredded chicken or rotisserie chicken.
  • Onion - instead of Vidalia onion you can substitute it with yellow onion.
  • White wine - in place of white wine and using alcohol in soup, you can substitute it with ¼ cup white wine vinegar and ¼ cup of water. Or ¼ cup lemon juice and ¼ cup of water. See how many ounces in a cup for conversions if you need.
  • Beef Broth - in this broth for mushroom onion soup, we make it with chicken bone broth or vegetable broth. You can make it with beef broth too. If using beef broth substitute white wine for red wine.

See this slow cooker shredded chicken on my website that you can use in this soup!

How to make mushroom and onion soup

Use this section for process shots, alternating between the step and image showing the step. Users don't like seeing process shots cluttering up the recipe card, so include your process shots here.

Easy Mushroom Onion Soup Recipe (3)

Wash mushrooms in water and rinse off the onion. Remove skin of onion and cut in half then into thin slices. Slice mushrooms.

Easy Mushroom Onion Soup Recipe (4)

Heat butter, onion, and mushrooms in a pan until darkened. Then add the garlic.

Easy Mushroom Onion Soup Recipe (5)

Mix in the cornstarch to make a roux.

Easy Mushroom Onion Soup Recipe (6)

Add broth, seasonings, wine, tomato paste and bring to a boil. Turn down the heat and simmer 20 minutes.

Hint: As you keep sautéing the onion and mushrooms, continue stirring frequently as it cooks. This helps to prevent burning and sticking to the pan.

Easy Mushroom Onion Soup Recipe (7)

Equipment

Equipment for soup is just a large pot to simmer the mushroom onion soup in. You can use either a non-stick nontoxic pan, or stainless steel pan. Since we saute the vegetables in oil or butter first, sticking is not a concern.

I recommend using an enamel cast iron Dutch oven pot or stainless steel pot like these (affiliate links).

Storing mushroom onion soup

Store leftover soup in the refrigerator in an airtight container for up to 5 days. To reheat, bring it to a boil then reduce to a simmer for about 5 minutes before serving.

These ingredients freeze well! Store the cooked soup in a freezer bag and seal it tight, removing all the air. Store it in the freezer laying flat so it thaws quickly. It lasts in the freezer for about 3 months.

Top tip for prepping soup and meals

  • Meal prep! Meal prepping saves so much time in the week andand at the end of the daybecause food is ready to grab and cook without the hassle of chopping and cooking. How much time do you think that saves... 10-20 minutes per meal? That is a lot of time once you add it up.
  • Wash and store extra mushrooms and onions for another weekly meal. A big tip is to wash and slice a large batch of Cremini mushrooms or white mushrooms and onions and set them in the refrigerator in air-tight containers to use throughout the week. That way you have fresh mushrooms to quickly grab from the fridge any time you need. Use the prepared mushrooms for a healthy snack with this vegan cashew cheese dip, in mushroom and onion soup, and as a gluten-free pizza crust topping!

Recipe FAQs

Is mushroom soup healthy?

Yes! Mushroom onion soup is very healthy and full of anti-inflammatory properties, along with cancer and heart disease prevention. Since the soup is mostly vegetables it is low calorie and wonderful to add to a weight loss diet.

What is the healthiest soup in the world?

Soups that are plant-based and low calorie are considered among the healthiest soups in the world. This mushroom onion soup is on the top of the list when made with chicken bone broth, which contains protein or vegetable broth. Try these other healthiest soups:
Easy Vegetable Soup
Cabbage Diet Soup
Zucchini Zoodle Ginger Soup
Rice Soup With Vegetables

What does mushrooms do to the body?

Mushrooms are rich in Selenium and antioxidants. Higher consumption of this medicinal fugi is known to help reduce the risks of certain types of cancer, and reduce certain health conditions such as Alzheimer's Disease, diabetes, inflammation, and heart disease.

Easy Mushroom Onion Soup Recipe (8)

What to serve with mushroom soup

These are my favorite dishes to serve on the side with mushroom onion soup.

  • Air fryer potato wedges
  • Gluten-free white bread
  • Breaded baked zucchini slices
  • Gluten-free breadsticks
  • Gluten-free cornbread muffins

More delicious soup and mushroom recipes

Looking for other recipes like this? Try these:

  • Sausage Stuffed Portobello Mushrooms With Spinach
  • Vegetarian Spinach Cranberry Mushroom Wreath
  • Mushroom Vegetable Chili Soup
  • Easy Vegetable Soup

I hope you enjoy this mushroom onion soup! Follow along with me on Instagram, Pinterest, Facebook, YouTube and Twitter for a feature and more recipe inspiration! And don't forget to rate the recipe in the recipe area and leave a comment below!

📖 Recipe

Easy Mushroom Onion Soup Recipe (13)

Mushroom Onion Soup Recipe

Danielle Fahrenkrug

This is a mushroom onion soup that's packed with flavor and easy to make, so you can whip together a batch in no time. You make it with earthy mushrooms and sweet caramelized onions, which add flavorful taste and nourishment that warms the bones deep to the soul.

4.34 from 3 votes

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 32 minutes mins

Total Time 47 minutes mins

Course Soup

Cuisine French

Servings 4

Calories 200 kcal

Ingredients

  • 2 tablespoons butter can use vegan butter
  • 5 cups Cremini mushrooms washed thoroughly and sliced
  • 2 Vidalia onions skin peeled away, cut in half then sliced
  • 2 garlic cloves minced
  • ¼ cup cornstarch
  • 4 cups broth beef broth, vegetable broth, bone broth, or chicken broth
  • ½ cup dry white wine
  • 2 tablespoons tomato paste
  • ½ teaspoon pink Himalayan salt
  • ¼ teaspoon black pepper
  • 2 tablespoons parsley fresh, chopped

Instructions

  • Add 2 tablespoons of butter in a large soup pot and heat over medium-high heat. Add the onions and mushrooms and cook until the onions are a soft brown, about 7 minutes.

  • Reduce the heat to low and add the garlic. Cook for about 5 minutes.

  • Slowly add the cornstarch and mix to thicken and form a roux with the mushrooms and onion.

  • Add the broth, wine, tomato paste, parsley, salt and pepper and bring to a boil. Once it is brought to a boil reduce the heat to low and let it simmer for about 20 minutes. Garnish with extra fresh parsley and season to taste with additional salt and pepper.

Notes

Try these substitutions if needed:

  • Onion - instead of Vidalia onion you can substitute it with yellow onion.
  • White wine - in place of white wine and using alcohol in soup, you can substitute it with ¼ cup white wine vinegar and ¼ cup of water. Or ¼ cup lemon juice and ¼ cup of water.
  • Beef Broth - in this broth for mushroom onion soup, we make it with chicken bone broth or vegetable broth. You can make it with beef broth too. If using beef broth substitute white wine for red wine.

Nutrition

Calories: 200kcalCarbohydrates: 30gProtein: 4gFat: 6gSaturated Fat: 4gPolyunsaturated Fat: 0.3gMonounsaturated Fat: 1gTrans Fat: 0.2gCholesterol: 15mgSodium: 1367mgPotassium: 723mgFiber: 3gSugar: 13gVitamin A: 968IUVitamin C: 13mgCalcium: 66mgIron: 1mg

Tried this Recipe? Tag me Today!Mention @DelightfulMomFood or tag #delightfulmomfood!

Food safety

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More Soup Recipes

  • Easy Roasted Butternut Squash Apple Soup Recipe
  • Bone Broth Recipe
  • Healthy Swiss Chard Soup
  • Crockpot Creamy Taco Chicken Chili

About Danielle Fahrenkrug, Certified Health & Nutrition Life Coach

Danielle Fahrenkrug is an entrepreneur, self taught chef, and food photographer turned 3x cookbook author. Her passions of helping others with healthy eating led her to becoming a certified health and nutrition life coach. She is also a wife, mother of four, and loves the beach, animals, and fitness.

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Comments

  1. Marti says

    I loved it but changed it. I used the Insta pot. Sauteed onions the ssme and mushrooms i used 2 8oz cartons of white kind snd added in salute. I added tsp of thyme and seasoned salt. I added 2 cans of white cooked chicken and broke it up slightly. Added a half cup of Wild rice mix and everything else was from original recipe. I put in 1carton of chicken broth and also 2 cans of chicken broth and it fills IP to fill line. Put pot on manual for cooking soup. Cooked 30 min. When it goes off. Wait 10 min let button go down. Release steam when safe. You can thicken with flour or heavy cream too just turn on salute for a couple minutes then off, or keep warm. It was an experiment buy came out great.

    Reply

    • Danielle Fahrenkrug says

      Lovely methods for the Insta pot! Thanks for sharing!

      Reply

  2. Kathi madden says

    Hi Danielle! the soup looks amazing and perfect for this winter day. I was wondering about the coconut flour -- I've never used it before and would have to go buy it today (I have everything else)... can I use regular flour?
    Thanks!

    Reply

    • Danielle Fahrenkrug says

      Hi Kathi! Yes regular flour is fine to use. I will adjust that in the recipe and add it.

      Reply

  3. Linda says

    Easy Mushroom Onion Soup Recipe (18)
    Dear Danielle, I thoroughly enjoyed this soup! I was having to pamper the inside of my lip and fearful of biting it while eating, so I used my hand blender and made this soup into a puree. It was so tasty and satisfying! I can't wait to make it again leaving the ingredients whole :-).

    Reply

    • Danielle Fahrenkrug says

      Hi Linda! Thank you I am so glad you enjoyed this soup even pureed! I would love if you can also rate it in the recipe card- it helps others to find it too:-). Thank you so much!

      Reply

  4. Connie Reynolds says

    Is that chopped parsley I see in the soup? I don't see it in the ingredient list or instructions. Thanks!

    Reply

    • Danielle @ Delightful Mom Food says

      Yes, but just to garnish it, it is not added into the soup prior.

      Reply

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Easy Mushroom Onion Soup Recipe (2024)

FAQs

What makes cream of mushroom soup taste better? ›

What are some herbs and spices that can be used to enhance canned cream of mushroom soup? There are several herbs and spices that can enhance the flavor of canned cream of mushroom soup. Popular options include thyme, rosemary, parsley, garlic powder, onion powder, black pepper, and paprika.

How do you deepen the flavor of French onion soup? ›

My personal go-tos include worcestershire sauce, fish sauce, and brandy. Each deepens the flavor of french onion soup. Balsamic vinegar and soy sauce are other great options.

Why does my mushroom soup taste bland? ›

Older mushrooms or ones that aren't as fresh might lack flavor. Insufficient Seasoning: Soups need a good amount of seasoning to bring out their flavors. Ensure you've added enough salt and other seasonings. Lack of Depth: If only water was used, the soup might lack depth.

What is the difference between French onion soup and regular onion soup? ›

What is the Difference Between Onion Soup and French Onion Soup? French onion soup is always made with beef stock. Other onion soups can be made with chicken, vegetable, or beef stock. Additionally, French onion soup typically contains wine or sherry, which isn't typical or necessary in other onion soups.

Is cream of mushroom soup better with milk or water? ›

Of course when we were growing up it was Campbell's and it came in a can. But even as an 8 year old I took great pride in heating my own soup, and discovered for myself how much better it was if you added milk instead of water, and how important it was to slowly add the milk while stirring so it wouldn't form clumps.

What thickens mushroom soup? ›

Add Flour Or Cornstarch

You can thicken soup by adding flour, cornstarch, or another starchy substitute. For the best results, never add flour or cornstarch directly to your soup. If you do, it will clump up on top. Instead, ladle a small amount of broth into a separate bowl and let it cool.

How do you fix bland onion soup? ›

Fix a bland onion soup by using supermarket broth and mild white onions, tasteless oil for sauteeing, stale plain white bread instead of croutons, and mild white cheese. Start by reducing the broth. Simmering out some water will intensify the flavor of the broth. Once you get it to the right point, add some salt.

How do you add depth to onion soup? ›

A few sprigs of thyme and a bay leaf elevate the soup even more, but I take it a step further, adding a splash of fish sauce for complexity and depth—don't worry, it won't taste fishy—and a hit of cider vinegar to balance some of that oniony sweetness.

Why do you put baking soda in French onion soup? ›

Baking soda speeds up browning (that Maillard reaction you may have heard about) and leads to softer onions by breaking down the cells faster. And heat? Well, naturally, food cooks faster at a higher temperature, and the addition of water here reduces the risk of burning and better distributes all the sugars.

What not to put in soup? ›

The Worst Things to Put in Your Soup
  1. By Sara Butler. If there's one good thing about fall and winter, it's soup. ...
  2. Heavy Cream. Heavy cream creates an inviting texture for soups but that's where its positive contributions end. ...
  3. Juice. ...
  4. Turkey Bacon. ...
  5. Cheese. ...
  6. Croutons.

How to spruce up mushroom soup? ›

Add herbs and spices: A pinch of herbs like thyme, rosemary, or parsley can add depth and complexity to the soup. You can also try adding a pinch of spices like paprika, cumin, or chili flakes to give the soup a little kick. Add a splash of wine: A splash of dry white wine can add depth and complexity to the soup.

What's the difference between mushroom soup and cream of mushroom soup? ›

The difference is the cream. Mushroom soup has a thin clear broth.

What kind of onion is best for soup? ›

When you are sauteing onions to build flavor as a base for your dish (soup, tomato sauce, you name it), the yellow onion is your friend. That being said, white onions are a totally acceptable substitute for yellow, especially if you're cooking them.

Why did Panera change their French onion soup? ›

First, it removed the French Onion Soup, a staple on the menu for over 20 years, to make room for seasonal menu items in June. Then, it was revealed the brand was heating up frozen dishes. In a change from their previous social media reactions to public outcry, the St.

What ethnicity is French onion soup? ›

The classic French onion soup gets its name from its country of origin: France. After making its debut in the 18th century, it has become a national treasure. During ancient times (and still today), onions were cheap and easy to grow, and hence, readily available.

How to make canned cream soup better? ›

If you are working with a creamed soup, consider pureeing some vegetables to stir in. Cooked cauliflower, potatoes, winter squash, or carrots would work really well. Herbs: Fresh chives, thyme, or cilantro stirred in just before serving.

How to make canned mushroom better? ›

To enhance the flavor of canned mushrooms, you can sauté them in butter or olive oil with some garlic, herbs, or spices. This will help to bring out their natural flavors and add extra depth to your dish. You can also marinate them in a mixture of vinegar, oil, and herbs before using them in salads or sandwiches.

How do you make soup more flavorful? ›

Use fresh vegetables, high-quality meats or broth, and fresh herbs to add depth of flavor. Add acidity: A squeeze of lemon or lime juice, a dash of vinegar, or a splash of wine can brighten the flavors of a soup and make it taste more complex.

How do you take the bitterness out of mushroom soup? ›

Add acidic ingredients: Adding acidic ingredients like lemon juice, vinegar, or tomatoes can help balance out the flavor of the mushrooms. Use other strong flavors: Adding other strong flavors like garlic, onions, or herbs can help mask the mushroom taste.

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