Slow Cooker Herbed Mushrooms and Onions
9 Comments Jun 29, 2020
Updated Jan 27, 2024
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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.
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
How long do I cook?
- Place the lid on the slow cooker.
- Cook on HIGH for 4 hours or LOW for 7.
What can I serve this on?
- Grilled Steak – Recipe by Bobby Flay
- Barbecued Chicken
- Hamburgers
- Baked Potatoes
More summer recipes to try in your slow cooker:
- Slow Cooker Apple Barbecue Pork Loin
- Slow Cooker Caramelized Onions
- Slow Cooker Garlic Confit
- Slow Cooker Peachy Barbecue Ribs
- Slow Cooker Milk and Honey Corn on the Cob
- Slow Cooker Root Beer Chicken
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Slow Cooker Herbed Mushrooms and Onions
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
- Grilled Steak
- Barbecue Chicken
- Hamburgers
- Baked Potatoes
Nutrition
Nutrition info is auto-generated. This information is an estimate; if you are on a special diet, please use your own calculations.
Where’s the liquid for cooking?
The butter is the liquid and the veggies will cook down and make some liquid.
Made this to put on steak and froze small containers of it. I’ve made this before and frozen ones were just as good.
Good to hear Shangra!
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!
Such a great idea!
Can you cook chicken breast in this?
Yes! That’s a great idea.
These look and sound amazing, yum!