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Slow Cooker Steak and Mushroom Soup: A Busy Day Lifesaver

Steak and Mushroom Slow Cooker Soup combines round beef steak with mushrooms and a flavorful broth. This recipe creates a quick-to-assemble soup you can put in a slow cooker and forget about until dinner time.


Is your freezer a black hole?

Recently, a package of round steak was found hanging out at the bottom of my freezer. It was still safe to eat but had a little bit of freezer burn. Just slightly past its prime. Evidently, it fell down the black hole in my freezer.

Round steak is not particularly good for a walk-in-the-door-and-eat-10-minutes later kind of menu. It’s more tender when cooked with moisture.

Recipe Inspiration

Consequently, I started thinking about soup in a slow cooker. The result is this tasty recipe for Steak and Mushroom Slow Cooker Soup. The recipe is my own but I was inspired

The original idea originated with the prime rib soup at Harrigan’s restaurant (sadly, long gone in our area).  It used to be one of my favorites on their menu along with New Orleans potatoes and Cheesy Yeast Rolls.

Notice I don’t use prime rib in this recipe because I don’t normally have such elegant leftovers. But round steak is very tasty, especially when cooked in a slow cooker.  Prime rib couldn’t stand cooking all day anyway.

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    Yield: 4-6

    Slow Cooker Steak and Mushroom Soup: A Busy Day Lifesaver


    Beef and mushrooms dominate this hearty and filling soup.

    Prep Time 20 minutes
    Cook Time 10 hours
    Total Time 10 hours 20 minutes


    • 2 slices bacon
    • 1-2 pounds round steak, cut in 1-inch cubes
    • 1 cup frozen chopped onions
    • 8 ounces fresh mushrooms, sliced
    • 5 cups water
    • 1 tablespoon beef bouillon concentrate
    • 1 tablespoon Kitchen Bouquet
    • 1 teaspoon soy sauce
    • 1 bay leaf
    • Freshly ground black pepper
    • 1 cup plain Greek yogurt or sour cream


    1. Fry bacon. Remove from pan, crumble and place in crock pot.
    2. Saute steak in remaining bacon grease over high heat until browned. Do this in small batches so skillet doesn't cool down. Place browned steak in crock pot.
    3. Saute onions and mushrooms in pan. Add to crock pot.
    4. Add water, bouillon, Kitchen Bouquet, soy sauce, bay leaf and black pepper to crock pot and stir.
    5. Cook on LOW for 8-10 hours.
    6. Remove about 1 cup broth from soup and whisk yogurt or sour cream into it unto smooth. Add back to crock pot and stir. Remove bay leaf before serving.

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    Nutrition Information:



    Serving Size:


    Amount Per Serving: Calories: 383Total Fat: 16gSaturated Fat: 6gTrans Fat: 0gUnsaturated Fat: 7gCholesterol: 143mgSodium: 459mgCarbohydrates: 8gFiber: 1gSugar: 4gProtein: 53g

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    Thursday 6th of September 2012

    Another delicious recipe!


    Thursday 6th of September 2012

    Thanks Rach. You're the best!


    Friday 18th of November 2011

    I'm with Emily.... What is kitchen bouquet? B/c this recipe sounds like my fam would love it!!


    Friday 18th of November 2011

    Amber, it is a dark brown seasoning sauce. You can read about here. I use it to add deeper and fuller flavor and color.


    Tuesday 11th of October 2011

    I made this last night and the greek yogurt curdled when it hit the full soup, even though I whisked it well before putting it in. Now it looks like there's cottage cheese sitting at the bottom of my bowl. How do I fix this next time?


    Tuesday 11th of October 2011

    Danielle, Oh dear, that would not look appetizing. I didn't have that problem but here is what I suggest. First, be sure soup is not boiling. Then pour a tiny bit of the hot soup broth into the yogurt and whisk well. Then add a little more broth and continue whisking. Repeat until yogurt is very then and hot, then add to soup. Don't cook soup after you have added the yogurt.

    Another option would be to serve soup without it and the add a dollop of Greek yogurt on top and let people stir it in as they eat. Doubt if you can pull that off with kids. :-)

    Yudith @ Blissfully Delicious

    Sunday 9th of October 2011

    Oh wow, this looks great! I'm always looking for a new delicious slow-cooker dish, thanks for sharing :)


    Thursday 29th of September 2011

    It's in my crock pot right now and it smells so good! I didn't read the directions closely and I didn't saute my onions first. Oh well, I'm sure it will be delicious!