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Home » Hot Side Dishes

Published: Feb 15, 2022 · Modified: Jun 3, 2025 by Pam

The Best Sauteed Mushrooms and Onions for Steak

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pin for mushrooms and onions sauteed and in serving bowl

Only 4 ingredients plus salt and pepper are needed to make sauteed mushrooms and onions for steak that are restaurant-quality. This classic side dish would be a fantastic topping for any other beef dish, as well!

Funny how you can make a dish for so many years you just take it for granted. That's how it was with these onions and mushrooms.

It hadn't really occurred to us until recently that this would even be considered a recipe. We've made it lots of different ways, too. Sometimes we've added a splash of red wine, but most often we keep it simple like we've done here.

Love recipes with sweet onions? Our Barbecue Shrimp Salad has grilled shrimp, corn and the sweet Vidalias and a beautiful Barbecue Salad Dressing that you'll go crazy for!

Jump to:
  • Why you'll love these sauteed mushrooms and onions for steak
  • Substitutions and Variations
  • How to make sauteed mushrooms and onions for steak
  • Expert Tips
  • How to clean mushrooms
  • What takes longer to cook - mushrooms or onions?
  • Some of the best ways to serve sauteed onions and mushrooms:
  • Recipe FAQs
  • Need more dishes to serve with steak? Try these!
  • 📖 Recipe
  • Hot Side Dishes

Why you'll love these sauteed mushrooms and onions for steak

  • This recipe has very basic ingredients like butter, salt and pepper
  • The Worcestershire sauce blends just perfectly with the earthiness of the mushrooms and the sweetness of the onions.
  • In less than 20 minutes, you will have a restaurant-quality topping for your homecooked steak.
sauteed onions and mushrooms for steak in two small plates

Substitutions and Variations

You will find garlic added to a lot of recipes out there, but that's one ingredient we don't use. If you love garlic in everything feel free to toss some in towards the end of cooking, but my personal opinion is that it's a bit overpowering.

How to make sauteed mushrooms and onions for steak

  • Melt butter in a skillet over medium high heat, taking care to not let your butter start to brown. You can use smoked butter for extra flavor.
  • Add sliced onions and Worcestershire sauce and cook, stirring occasionally for 3-4 minutes or until edges start to get a little brown.
  • Add mushrooms and cook for an additional 5-8 minutes depending on the size of the mushrooms and your preference for doneness. Whole mushrooms will take the longest.
  • Salt and pepper your mushrooms and onions to taste.

Expert Tips

  • We love baby bella mushrooms in this recipe, but simple white (button) mushrooms are also delicious. You could also try this recipe with sliced portobellos!
  • If you can find Georgia-grown Vidalia onions, of course we prefer them because they are just so sweet! If they're out of season, though, just be sure to use any sweet onion variety. Red onions would not be good in this recipe.
skillet of sauteed onions and mushrooms

How to clean mushrooms

This is a subject open to debate. Some purists will argue that you should only wipe a mushroom clean. The theory behind this is that mushrooms will retain water and get soggy.

The truth is that will only happen if you soak them in water. Mushrooms can be quite dirty and we do wash them, but quickly. The best method is to put them in a colander so the water drains off immediately.

Then take them out of the colander and dry them on paper towels. With this method you'll get clean mushrooms that are not waterlogged.

close up of mushrooms and onions for steak in spoon

What takes longer to cook - mushrooms or onions?

Another debate! So many arguments over such a simple recipe, y'all! But it's true that many people ask the question "should you saute the mushrooms or onions first?"

Well, the definitive answer is "it depends". I know that's not really definitive, but the truth is that it's a matter of personal preference. I like my onions cooked to the point that they're nearly caramelized.

If you're like me then you'll want to cook the onions for just a few minutes before putting in the mushrooms. If you prefer your onions with a little crunch left in them you may want to start the mushrooms first and then add the onions after 3-4 minutes.

The other factor that makes this an argument is the size of your mushrooms. Are they small button mushrooms? Are they larger? Are they larger, but you sliced them? All of this will factor in to how long it takes to cook the mushrooms.

The truth is that sauteed mushrooms and onions are a very forgiving recipe. Unless you just way overcook them they're going to be good. Just tweak the time and temperature and what goes in the pan first and find that sweet spot for you and your family.

Some of the best ways to serve sauteed onions and mushrooms:

  • on a burger
  • over steak is classic and you'll want to check out our always perfect reverse reverse seared steaks (yes, I meant to say "reverse" two times)
  • for a southern twist serve them over country fried steak
  • as a side dish with pretty much anything
white plate with sauteed mushrooms and onions for steak surrounded by raw veggies

Recipe FAQs

What kind of mushrooms are best for sautéing?

We prefer baby bella, but sliced portobellos or even white (button) mushrooms would be great, too.

What is a good substitute for Vidalia onions?

You can use any sweet variety like yellow onions as a sub for Vadalias. Just be sure to not use red onions.

How do you clean mushrooms?

Quickly! They're very dirty, so please do clean them, but the best way to prevent them from getting soggy is to clean them quickly in a colander.

Need more dishes to serve with steak? Try these!

  • Roasted Carrots and Green Beans
  • Air Fryer Asparagus Parmesan
  • Roasted Cajun Potatoes
  • Cast Iron Skillet Potatoes
  • Gouda Potatoes Au Gratin

📖 Recipe

square photo of sauteed onions and mushrooms in white plate

Sauteed Mushrooms and Onions for Steak

Pam
Only 4 ingredients plus salt and pepper are needed for this restaurant quality side dish. Sauteed mushrooms and onions are the classic topping for steak or any other beef dish.
5 from 8 votes
Print Recipe Pin Recipe
Prep Time 5 minutes mins
Cook Time 10 minutes mins
Servings 4 people
Calories 121 kcal

Ingredients
  

  • 1 pound mushrooms whole if small, sliced if larger
  • 1 large sweet onion sliced
  • 3 Tablespoons butter salted or unsalted, adjust added salt accordingly
  • 3 Tablespoons worcestershire sauce
  • salt to taste
  • freshly ground black pepper to taste

Instructions
 

  • Melt butter in skillet over medium high heat taking care to not let your butter start to brown.
  • Add sliced onions and worcestershire sauce and cook, stirring occasionally for 3-4 minutes or until edges start to get a little brown.
  • Add mushrooms and cook additional 5-8 minutes depending on the size of the mushrooms and your preference for doneness. Whole mushrooms will take the longest.
  • Salt and pepper to taste.

Notes

  • We love baby bella mushrooms in this recipe, but simple white (button) mushrooms are also delicious. You could also try this recipe with sliced portobellos!
  • If you can find Georgia-grown Vidalia onions, of course we prefer them because they are just so sweet! If they're out of season, though, just be sure to use any sweet onion variety. Red onions would not be good in this recipe.

Nutrition

Serving: 4gCalories: 121kcalCarbohydrates: 9gProtein: 4gFat: 9gSaturated Fat: 5gPolyunsaturated Fat: 1gMonounsaturated Fat: 2gTrans Fat: 1gCholesterol: 23mgSodium: 207mgPotassium: 505mgFiber: 2gSugar: 5gVitamin A: 273IUVitamin C: 6mgCalcium: 26mgIron: 1mg
Tried this recipe?Let us know how it was!

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Reader Interactions

Comments

  1. Aimee Mars says

    February 16, 2022 at 11:28 am

    5 stars
    I've thought the same thing about fried potatoes and onions! Every time we go out to eat though and my husband orders steak or meat he gets a side of mushrooms and so I can absolutely see how this can be a very important recipe. I can't wait to make it for him!

    Reply
  2. Tavo says

    February 16, 2022 at 12:10 pm

    5 stars
    Great side dish, still super simple! Thanks for another great recipe!

    Reply
    • Pam says

      February 17, 2022 at 6:17 pm

      Thank you,Tavo!

      Reply
  3. Wanda says

    February 16, 2022 at 12:20 pm

    5 stars
    Going to save this recipe to make with roast beef this weekend. My husband is going to love these mushrooms and onions!

    Reply
  4. Michelle says

    February 16, 2022 at 12:26 pm

    5 stars
    Super easy to make and lives up to its name!

    Reply
    • Pam says

      February 17, 2022 at 6:17 pm

      Thank you Michelle!

      Reply
  5. Teodora says

    February 16, 2022 at 12:46 pm

    5 stars
    Perfect side dish! Simple and delicious!

    Reply
    • Pam says

      February 17, 2022 at 6:16 pm

      Thanks so much!

      Reply
5 from 8 votes (3 ratings without comment)

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