Sauteed mushrooms and onions are the perfect balance of semi-sweet, tangy, salty, and earthy flavors. They're also super easy to make which makes them a fantastic side dish for any meal. Your sauteed mushrooms and onions are sure to be a new family favorite that you'll love sharing.
Serve with a meaty main like my tomahawk steak, grilled lamb chops, or grilled marinated pork chops.
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A hearty side dish like this combination of tender, tasty mushrooms and caramelized onions is just what you need when serving up some amazingly satisfying meaty main dishes. Of course, since this is such a versatile side dish they're also equally wonderful with practically any main dish.
Serving your sauteed mushrooms and onions with lighter fare like vegetarian or vegan dishes is also an excellent way to add rich, savory flavor.
This easy side dish is the perfect complement to steaks, burgers, meatloaf, and grilled mains!
🥘 Ingredients
All you need for this fabulous side dish is some mushrooms, onions, and flavor enhancers. Just a few basic ingredients combine to serve up this dish with a huge flavor.
- 2 tablespoons Olive Oil (extra virgin)
- 2 tablespoons Worcestershire Sauce (see tips for substitutions)
- 1 pound Mushrooms (white button mushrooms or cremini mushrooms - cleaned and sliced, quartered, or halved depending on size)
- 1 large Sweet Onion (Walla Walla and Vidalia sweet onions are the best for flavor)
- 1 teaspoon Garlic (minced)
- Salt & Pepper (to taste)
- 1 tablespoon Butter (optional) add a pat of butter at the end for a rich depth of flavor, and makes the best sauteed mushrooms and onions.
Be sure to see the free printable recipe card below for ingredients, exact amounts & instructions with tips!
🔪 How To Make Sauteed Mushrooms and Onions
Prep your tasty onions and tender mushrooms, then grab a skillet. You'll have these sauteed mushrooms and onions ready in time to serve with dinner.
- Heat. Bring a large skillet or non-stick frying pan to medium-high heat with 2 tablespoons of olive oil. Once the oil begins to shimmer, stir in the 2 tablespoons of Worcestershire sauce and add the 1 pound of mushrooms.
- Saute. Start with sauteing the mushrooms for about 5 minutes on their own, until they start to turn golden brown, stirring about every minute and a half or so.
- Add the sliced sweet onions. Then continue to saute with the mushrooms, stirring occasionally, until caramelized. This should take about 10 minutes.
- Season. Once the mushrooms and onions are browned and almost ready to serve, reduce the heat to low, stir in 1 teaspoon of minced garlic, and season with salt and pepper. *Add optional butter if desired.
- Finish and serve. Saute for 30 seconds to a minute more, then remove from heat and serve immediately.
💭 Angela's Pro Tips & Recipe Notes
- You can substitute the Worcestershire sauce with equal amounts of soy sauce, red wine (a good quality dry red wine works best), balsamic vinegar, or beef stock.
- When cooking the mushrooms, it is important to not rush. Allow them to cook off their water content.
- Choose sweet onions for better caramelization and flavor.
- A splash of fresh (not bottled) lemon juice takes this tasty mushroom and onion side dish from amazing to out-of-this-world!
- To quickly clean your mushrooms (without getting them water-logged) brush them off with a damp towel or dry brush OR place them into a colander and spray them using your sink sprayer.
🥡 Storing & Reheating
Store your leftovers in an airtight container in the refrigerator for up to 3-4 days.
Reheat your leftovers in a pan over medium heat or in the microwave in 30-second increments until heated through to your liking.
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❓ Recipe FAQs
Sauteed mushrooms and onions can be used as a topping for steak or burgers, or you can mix them with pasta or rice! You can also use them as a filling for omelets. It's a versatile side dish that can be paired with a large variety of main courses!
The best mushrooms for sauteing are those with a firm texture, such as white button mushrooms, cremini mushrooms, or shiitake mushrooms. If you have a favorite kind of mushroom, you can use it in this recipe!
Technically, you can if desired; however, I recommend using fresh mushrooms for this recipe! Frozen mushrooms may hold too much moisture and become mushy when sauteed.
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📖 Recipe Card
Sauteed Mushrooms and Onions
Ingredients
- 2 tablespoon olive oil (extra virgin)
- 2 tablespoon Worcestershire sauce
- 1 lb mushrooms (white button mushrooms or cremini mushrooms - cleaned and sliced, quartered, or halved depending on size)
- 1 large sweet onion (Walla Walla and Vidalia sweet onions are the best for flavor)
- 1 teaspoon garlic (minced)
- each, salt & pepper (to taste)
- 1 tablespoon butter (optional)
(Note: 2x or 3x only changes the ingredient list)
Instructions
- Bring a large skillet or non-stick frying pan to medium-high heat with the olive oil. Once the oil begins to shimmer stir in the Worcestershire sauce and add the mushrooms.
- Saute the mushrooms for about 5 minutes on their own, until they start to turn golden brown, stirring every minute and a half or so. Add the sliced sweet onions and continue to saute, stirring occasionally, until caramelized. This should take about 10 minutes.
- Once the mushrooms and onions are browned and almost ready to serve, reduce the heat to low, stir in the garlic plus optional butter, and season with salt and pepper. Saute for 30 seconds to a minute more then remove from heat and serve immediately.
Notes
- If you cutting your mushrooms into quarters and/or halves, be sure to try and get them approximately the same size so that they will cook evenly.
- Sweet onions truly do have a sweeter flavor than your standard yellow onion variety. If you have them on hand, they're much better when sauteed with mushrooms.
- You can substitute the Worcestershire sauce with equal amounts of either soy sauce, red wine (a good quality dry red wine works best), balsamic vinegar, or beef stock.
- When cooking the mushrooms it is important to not rush. Allow them to cook off their water content.
- A splash of fresh (not bottled) lemon juice takes this tasty mushroom and onion side dish from amazing to out-of-this-world!
- To quickly clean your mushrooms (without getting them water-logged) brush them off with a damp towel or dry brush OR place them into a colander and spray them using your sink sprayer.
Maritha says
Gewoon in één woord: HEERLIJK 😋
"Simply in one word: DELICIOUS"
Jc says
Depuis que nous l'avons testé...voilà deux fois déjà que nous renouvelons l'expérience...
On adooore!!
Nous avons cette fois ajouté du persil juste avant de servir ...🙂
"Since we tested it...we have repeated the experience twice already...
We love it!! This time we added parsley just before serving."
Becky says
This is absolutely delicious! I will be making this once a week. It was perfect without making any changes.
Anonymous says
hi. you forgot to mention the amount of butter or is it an option?
Angela @ BakeItWithLove.com says
Oh my! I do get ahead of myself sometimes, sorry! I only used a tablespoon of butter to add richness and finish off the mushrooms. Thanks for catching that!