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Quick and Easy Mushroom Stroganoff with steak. We make this easy weeknight dinner with Leftover Grilled Steak so you can have dinner in no time at all! 

Quick and Easy Mushroom Stroganoff Sauce with Leftover Grilled Steak

Mushroom stroganoff is one of my favorite dishes – creamy, savory, and SOOOO yummy! This dish uses leftover steak and makes a great quick lunch. Just follow the easy step by step directions below for this delicious mushroom stroganoff recipe.

When it’s steak grill time in our house, we find we end up with SO MUCH leftover steak (and chicken too!). We end up on the hunt for a variety of recipes for leftover steak and this is one of my favorites for lunch. It’s so creamy, easy, and quick to make so it’s one of the best grilled steak recipes for lunchtime! It’s one I run to frequently after grilling steak the night before.

We frequently run to leftover steak recipes such as lettuce-wrapped fajitas, salads, cauliflower “rice” bowls, or even add it to omelets – but sometimes we want something a little more satisfying. This mushroom stroganoff is perfect for when you’re looking for some delicious leftover steak recipes!

Quick and Easy Mushroom Stroganoff Sauce with Leftover Grilled Steak

How to grill steak

When it comes time to grill your steak – you have to be very careful or you can overcook it very quickly. General rule of thumb is to oil and season and then grill them for a few minutes on each side until you are happy with the results.

The exact specifics depend on if you’re using a grill, a stovetop, and how you like yours to taste.

How to cook steak on the grill

If you are specifically grilling steak on the grill and not your stovetop…first set the grill temp for steak to 450-500 degrees and brush your steaks with oil and lightly season with salt and pepper while you wait.

Then, place the steaks on the grill until golden brown and flip over to the other side until it is grilled to perfection.

How to grill the perfect steak

Want a few grilling steak tips for the best way to grill steak? Well the most important part of the perfect steak is to find the best steak for grilling – we find these to be boneless cuts such as ribeye, strip steak, top sirloin, or even flank (these are great for fajitas and lettuce wraps). They grill up great and are delicious for lunches as leftovers!

Another tip for the best way to grill steak is to first let it sit out at room temperature for at least 20 minutes – you NEVER want to throw a cold steak straight on the grill.

Once done grilling, transfer it to a cutting board and tent with foil for about 5 minutes before serving. By doing it this way, you will come out with a perfectly grilled steak every time. And you’ll have perfect leftovers for lunch the next day!

How long to grill steak

How long you grill your steak really depends how you your steak grilled. I personally am a medium rare girl! I love a juicy steak as long as it isn’t still mooing at me 😉

Typically, however… you’ll place your steaks on the grill until golden brown for about 4-5 minutes and then flip for another 3-5 minutes, for as long as 8-10 minutes.

What to do with leftover steak

Now what do you do with the leftover steak the next day? We personally love a good leftover steak recipe – they are pretty good! In general we will take leftover steak and repurpose them into other meals. Sometimes it’s lunch, sometimes dinner – sometimes we even throw it into our breakfast haha!

We generally don’t try to just “reheat” it as that can be tricky, though.

What to make with leftover steak

So what do you even make with leftover steak? Quick and easy mushroom recipes are one of our favorite leftover steak recipes but a few more leftover steak ideas that you can make are lettuce wraps, salads, cauliflower “rice” bowls, and so much more.

If you’re looking for something more fancy, you really need to try some leftover steak recipes stroganoff dishes. They are SOOOOOO good and a good way to mix things up from the standard everyday type recipe.

Quick and Easy Mushroom Stroganoff Sauce with Leftover Grilled Steak

Keto Quick and Easy Mushroom Stroganoff Sauce with Leftover Grilled Steak

This creamy, flavorful mushroom sauce is the perfect topper for leftover grilled steak!
5 from 1 vote
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Prep Time: 5 minutes
Cook Time: 10 minutes
Total Time: 15 minutes
Servings: 1 serving
Calories: 409.3kcal
Author: Faith


  • 1/2 tablespoon avocado oil
  • 4 oz/115 g about 1 1/4 cups whole button mushrooms, quartered
  • 1 large clove garlic minced
  • 4 tablespoons water plus more as needed to thin out the sauce
  • 1 1/2 oz/43g full-fat organic grass-fed cream cheese
  • 1/4 teaspoon Worcestershire sauce
  • 1 pinch black pepper
  • 3 oz/85 g leftover grilled steak thinly sliced across the grain
  • 1 teaspoon minced fresh parsley


  • Heat the oil in a small skillet over medium to medium-high heat. Once hot, add the mushrooms and cook until softened and starting to brown, about 4 to 5 minutes, stirring frequently.
  • Turn the heat down to low, add the garlic, and cook 1 minute, stirring constantly.
  • Add the water use a wooden spoon to scrape up any brown bits that have formed on the bottom of the skillet.
  • Stir in the cream cheese, Worcestershire sauce, and black pepper, and cook until heated throughout, about 3 minutes, stirring constantly.
  • To serve, reheat the steak on a hot grill or skillet. Transfer the steak to a plate, top with the mushroom sauce, and sprinkle on the parsley.


Serving: 1g | Calories: 409.3kcal | Carbohydrates: 7.5g | Protein: 30.9g | Fat: 29.7g | Polyunsaturated Fat: 6.3g | Fiber: 1.2g
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