Slow Cooker Herbed Mushrooms and Onions


7 Comments


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These Buttery Slow Cooker Herbed Mushrooms and Onions are a great topping for burgers, a must for summer barbecues!

We love easy summer recipes like this one. We make this steak topping along with Slow Cooker Jalapeno Corn for an easy dinner! If you are looking for a creamy version, try my Slow Cooker Creamy Tuscan Mushrooms.

Cooked mushrooms and onions in the slow cooker in a buttery sauce.
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Slow cooked onion and mushrooms are amazing and easily done right in the slow cooker. Top a burger or steak with these buttery vegetables.

How to make mushrooms and onions in the slow cooker:

  • Mushrooms – sliced button mushrooms
  • Onions – sweet yellow onions
  • Butter – salted butter (this helps make a rich sauce)
  • Garlic – minced
  • Seasonings – basil, thyme, salt and pepper
onion, mushrooms, seasonings and butter in the slow cooker, uncooked.

How long do I cook?

  • Place the lid on the slow cooker.
  • Cook on HIGH for 4 hours or LOW for 7.
cooked mushrooms and onions in slow cooker.
800

What can I serve this on?

hamburger with mushrooms and onions on top.

More summer recipes to try in your slow cooker:

Want to make more magic in your crockpot? Stay up to date and subscribe to my newsletter and follow along on Facebook, Instagram, Pinterest and YouTube.

cooked mushrooms and onions in a buttery sauce in slow cooker

Slow Cooker Herbed Mushrooms and Onions

5 from 1 vote
Prep Time: 10 minutes
Cook Time: 4 hours
Total Time: 4 hours 10 minutes
Servings: 10
Buttery and seasoned mushrooms and onions for topping your favorite main dishes.

Ingredients 
 

  • 4 cups sliced sweet yellow onion, I used 2 large onions
  • 4 cups sliced mushrooms
  • 1/2 cup salted butter, sliced
  • 1/2 tsp. dried oregano
  • 1/2 tsp. dried thyme
  • 1/2 tsp. sea salt
  • 1/2 tsp. coarse ground black pepper
  • 2 garlic cloves, minced

Instructions 

  • Add the onions and mushrooms into the slow cooker. Add the sliced butter, seasonings, and garlic.
  • Cover and cook on HIGH for 4 hours without opening the lid during the cooking time.
  • Serve and enjoy!

Sarah’s Notes

What can I put this on?
  • Grilled Steak
  • Barbecue Chicken
  • Hamburgers
  • Baked Potatoes
 

Nutrition

Calories: 117kcal | Carbohydrates: 8g | Protein: 2g | Fat: 9g | Saturated Fat: 6g | Cholesterol: 24mg | Sodium: 202mg | Potassium: 216mg | Fiber: 2g | Sugar: 3g | Vitamin A: 284IU | Vitamin C: 6mg | Calcium: 21mg | Iron: 1mg

Nutrition info is auto-generated. This information is an estimate; if you are on a special diet, please use your own calculations.

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7 Comments

  1. Shangra says:

    5 stars
    Made this to put on steak and froze small containers of it. Iโ€™ve made this before and frozen ones were just as good.

    1. Sarah Olson says:

      Good to hear Shangra!

  2. LarryD says:

    My Daughters & I loved this, we were cooking it up & putting it on everything.

    So I decided to add 2.5 lb of beef roast cut into 1 in cubes & browned to the recipe.

    WOW!

    1. Sarah Olson says:

      Such a great idea!

  3. Lisa says:

    Can you cook chicken breast in this?

    1. Sarah Olson says:

      Yes! Thatโ€™s a great idea.

  4. kellysparklesshoes says:

    These look and sound amazing, yum!