clock clock icon cutlery cutlery icon flag flag icon folder folder icon instagram instagram icon pinterest pinterest icon facebook facebook icon print print icon squares squares icon heart heart icon heart solid heart solid icon

Sautéed Mushrooms and Onions

  • Author: Erin Jensen
  • Prep Time: 10 minutes
  • Cook Time: 10 minutes
  • Total Time: 20 minutes
  • Yield: approx. 6 servings
  • Category: Side Dish
  • Method: Stove Top + Oven
  • Cuisine: American


Sautéed Mushrooms and Onions – a tried and true recipe for sautéed mushrooms and onions! Easy, delicious and perfect for any steak!


  • 8oz mushrooms, sliced
  • 1 sweet yellow 
  • 23 tablespoons ghee, butter or olive oil 
  • kosher salt and ground black pepper


  1. Remove outer peel from onion. 
  2. Cut onion in half, cutting through the stem.
  3. Taking each half one at a time, lay on a cutting board, flat side down.  Cut from stem to stem into thin strips. Use your hands to break apart and set aside. 
  4. Bring a large cast iron skillet to medium-high heat and add 1 tablespoon of ghee (or butter or olive oil).  Let melt and coat the pan.  
  5. Once the pan is hot, add the onion.  Sprinkle with kosher salt and ground black pepper (approx. 1/4 teaspoon of each).  Move the onions around fairly constantly, allowing them to cook down about 3-4 minutes.  You can cook longer if you want the consistency of your onions to be softer. If you want the consistency of your onions to be more firm with almost a bit of crunch, then cook them less.
  6. Add another tablespoon or two of ghee (or butter or olive oil) and the sliced mushrooms. Season again with kosher salt and ground black pepper. 
  7. Stir fairly constantly, allowing the mushrooms to cook down, about 3-4 minutes. 
  8. Taste and adjust seasoning as desired, add additional ghee or butter or cook a little longer if you have not reached your desired consistency. 
  9. Serve immediately with steak, pork chops or chicken! 


  • Onions: I prefer to use sweet yellow onions for this recipe, but you could really use any kind depending upon your own personal preference. 
  • Mushrooms: I used a simple pre-sliced, white mushroom for this recipe, but feel free to use a different variety if you want.  Cooking times may vary if you use a different variety so just keep an eye on the consistency of the mushrooms by testing often. 
  • Dairy-Free: To keep this recipe dairy-free use a plant-based butter or olive oil/avocado oil. 
  • Whole30/Paleo: To keep this recipe Whole30/Paleo use ghee (here is a homemade ghee tutorial if you want to make it yourself!).
  • Serving Suggestions: My favorite way to serve this is with a perfectly grilled steak! But it is also good as a side dish for any meal and it would be great served over pork chops or a simple grilled chicken breast

Keywords: sautéed mushrooms and onions