Steak, Mushroom and Onion Soup

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This dish is a hearty steak, mushroom and onion soup made with just nine ingredients! It’s a delicious soup that can be eaten right away or frozen for later.

How do I make my stew taste richer?

The meat, salt, aromatics all combine to create a really rich flavored soup. This dish is definitely not bland! The slow cooking lets the broth cook down and the flavors intensify.

Tips for making the BEST steak, mushroom and onion soup

  • You’ll want to use steak tips rather than stew meat for this recipe. Stew meat can be tough even when slow cooked. Steak tips have so much flavor and will melt in your mouth.
  • Make sure to use a beef broth that is AIP compliant.

5.0 from 1 reviews
Steak, Mushroom and Onion Soup
Prep time
Cook time
Total time
Serves: 4
  • 1 lb sirloin steak tips, cubed
  • 2 teaspoons salt
  • Extra virgin olive oil
  • 2 onions chopped
  • 4 garlic cloves
  • 1 teaspoon Italian seasonings
  • 4 cups beef broth
  • 2 portobello mushroom caps, diced
  • 3 handfuls spinach
  1. Sprinkle the steak with salt and set aside. Add a few tablespoons of olive oil to coat the bottom of a large stock pot. Brown the steak tips over high heat, about 5 minutes. Then remove from the pan and set aside.
  2. Add the onion and garlic to the pan and sauté until translucent about 3 minutes. Then add the steak back in along with the Italian seasonings and broth.
  3. Bring to a boil and then turn down to medium heat and let simmer for 1½ hours. At that point add the mushrooms. Stir to combine and then cook for another 30 minutes.
  4. Once finished cooking, add the spinach. Stir to combine and then serve.


About Beth Chen

Beth is mama to a beautiful boy, a self-taught cook and photographer. After becoming ill, Beth found the AIP diet and used it to help find stability in her health. She’s turned her passion for food, photography and healthy living into a blog called The purpose behind the blog was to make switching to the AIP lifestyle less intimidating and more delicious. Just because you have food restrictions, doesn’t mean that your food needs to taste like it. Besides the kitchen, her favorite place is her backyard where she chases her kiddo and is attempting to turn her black thumb green. Beth lives in San Diego with her husband and son.


  • Susan Mary Jimenez says

    Love love love these recipes. I have hasimotos and just found out I have Lupus. Thank you for all the info

  • Olivia says

    Does sirloin cap cut work in this recipe? It says sirloin steak tips in the recipe. Thanks.

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