Leftover Steak Soup With a Stroganoff Twist
Sneak Preview: Leftover Steak Soup combines the flavor of a steak with the umami of mushrooms. Adding tangy sour cream as the final touch creates a tasty gravy for dipping homemade French Bread or Ciabatta.
Our Christmas is over, the decorations are boxed and stashed back into the attic, but my fridge is still reeling from excess food, specifically leftover rib roast. It was delicious but too big for one meal. Are you like me and wondering what to do with leftover steak?

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That’s why this recipe was born.
Recycling a Christmas Rib Roast
Prepare this soup quickly with leftover meat. Use any leftover or pre-cooked steak you have on hand. Even a leftover roast would be delicious.
Herbs, spices, and a splash of red wine make the soup more interesting. Although I specify fresh herbs, you can substitute dried herbs if you have them on hand.
How to assemble Leftover Steak Soup:
Hopefully, you’ve got some good rustic or French bread in the house. Toast a slice of chewy bread for dipping in the saucy sour-cream flavored goodness.
You could go in a different direction by dishing up mashed potatoes, noodles, or mashed cauliflower in each soup bowl first, then topping with this stroganoff-like soup.
A word of warning: Heating this soup too long will cause certain types of steak to become chewy, for example, rib-eye or tenderloin. It doesn’t matter so much with a cooked roast meat like chuck.
p.s. No leftover steak? Check out this similar recipe for Steak and Mushroom Soup using a slow cooker and uncooked round steak.
Are you looking for a good bread recipe to dip in your soup?
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Soup Lover Suggestions:

If you have questions or suggestions, email me privately to Paula at saladinajar.com. Hope to see you again soon! Paula

Leftover Steak Soup Recipe
Ingredients
- 2 slices bacon - chopped
- 1 small onion - chopped
- 8 ounces fresh mushrooms - sliced
- 5 cups water
- 1 tablespoon beef bouillon concentrate
- 1 tablespoon Kitchen Bouquet
- 1 teaspoon soy sauce
- Splash of red wine - optional
- 1 bay leaf
- Freshly ground black pepper
- ⅛ teaspoon cayenne
- 1 teaspoon salt
- 2 tablespoons cornstarch
- 1 cup sour cream
- 1 pound steak - already cooked (leftovers would be perfect)
Instructions
- Fry bacon in large pot. Remove from pan and set aside. Leave grease in pan.
- Add onions and mushrooms to pot and fry until soft.
- Add water, bouillon, Kitchen Bouquet, soy sauce, red wine, bay leaf, salt, black pepper, and cayenne to pot.
- Combine cornstarch and 1/4 cup water together in a small jar. Add to pot, whisking all the while to prevent lumps. Over medium-low heat, bring soup to a simmer for about 5 minutes or until slightly thick.
- Skim off about 1/2 cup of soup liquid and add to sour cream in a small bowl. Whisk together until smooth.
- Add sour cream mixture back to soup along with cooked steak pieces. Warm until soup is heated through.
Paula Rhodes, author
I’m a retired home economist, wife, mother, grandmother, and creator of Saladinajar.com. I believe you don’t have to be a chef to find joy in creating homemade food worth sharing. Here you’ll find time-saving tips, troubleshooting advice, and confidence-inspiring recipes to make life in the kitchen more fun, appetizing, and satisfying.