Slow Cooker Leftover Prime Rib Stroganoff

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Leftover Prime Rib Stroganoff. How to make a delicious creamy beef stroganoff using prime rib leftovers. Loaded with cream cheese, prime rib, pasta, and mushrooms, this shouts out comfort food heaven.

Also works well with leftover steak and any leftover roast beef.

slow cooker prime rib stroganoff recipe
Slow Cooker Prime Rib Stroganoff Recipe

Leftover Prime Rib Stroganoff

Have you been enjoying our prime rib week?

If you have not been following it, then don’t forget to catch up with our air fryer prime rib and instant pot prime rib roast recipes.

But the best thing about making the prime rib, is the leftovers. A 4 rib (the size we had) was enough for several meals.

Whilst the price on a prime rib can seem like a big investment the quality of the meat is very much worth what you pay for.

But I want extra value for money with my prime rib, or rib roast as you might call it and want as many meals as possible.

That is why I am sharing a leftover prime rib stroganoff with you today. Because not only is it one of the best slow cooker pasta dishes that you will ever try, but because you don’t need a lot of prime rib to make it happen.

This is the amount of leftover prime rib we are using:

Leftover Prime Rib Stroganoff

But also note, that this beef stroganoff is enough to feed six people, so divide that prime rib between six and you can see how far it truly stretches.

Also note, we also have plenty more prime rib left, to share some more leftover recipes with you this week.


What Can I Do With Tough Roast Beef Leftovers?

Whilst this recipe today, is for using up leftover prime rib, it works with any steak or roast beef leftovers.

This means you can use it, to give a new lease of life to those tough roast beef leftovers. Because cooked in the stroganoff creamy sauce and cooked on slow will make your tough bits tender again.

Beef Stroganoff With Mushrooms

Did you know in a traditional beef stroganoff recipe from years and years ago, there was no mushrooms in a stroganoff.

Beef stroganoff with mushrooms has become a trend that has been followed now for many years.

I find that the mushrooms will bulk up the recipe and create a bigger recipe, but you can make it without mushrooms if you prefer.

Prime Rib Stroganoff In The Slow Cooker

You might be wondering, why am I making a prime rib stroganoff in the slow cooker, well its simple.

You can dump all the ingredients into your slow cooker, you can cook the pasta in the slow cooker, with no need to boil it separately.

Also, because it makes such a large portion, you can have it for lunch then keep the slow cooker on warm and have another helping of prime rib stroganoff for supper.

How To Make Stroganoff Sauce?

If you want to know what makes an easy beef stroganoff, then its all about the stroganoff sauce.

You see the stroganoff sauce ingredients are dumped in the slow cooker with the other ingredients, and as you mix the stroganoff it creates an incredibly creamy stroganoff sauce.

The sauce is made up of a combination of Philadelphia cream cheese, beef stock and milk.

So don’t think you have to slave over a stove to make a creamy sauce as its three amazing, yet simple everyday ingredients.

Leftover Beef Stroganoff Ingredients

leftover beef stroganoff ingredients

Leftovers – We are talking about a leftover beef stroganoff here, so lets talk about the main ingredient and that is leftover roast beef, or what we are using today which is leftover prime rib. No matter what you are using cut it into strips similar to a classic stroganoff.

Pasta – In a classic beef stroganoff you would use a big, long pasta, such as tagliatelle or linguine. But I am all about cutting costs on groceries and going with what you have. That is why I am using some small wholegrain pasta instead. You can use whatever you like.

Mushrooms – A modern day leftover prime rib beef stroganoff would be loaded with mushrooms. I recommend getting the cook times and consistency right, that you use mushrooms and simply slice them in half.

Cream – Instead of using classic cream we are reducing the calories and making a richer creamy sauce with other ingredients. Using Philadelphia, beef stock and milk. If you add milk and cream cheese together it naturally creates a creamy sauce then the beef stock stops the pasta drying out and also adds flavour.

Stock – For our beef stock we used beef stock from a previous instant pot recipe that we had frozen, then cooked the stock from frozen in the instant pot.

Seasoning – For seasoning we used salt, pepper, garlic, mustard, thyme, dill, and parsley.

Then for the kitchen gadgets that we have used in this prime rib beef stroganoff recipe, it has just been our Crockpot. We have this one and it does an amazing job and is also ideal for sauteing too.

How To Make Beef Stroganoff With Leftover Prime Rib?

slow cooker prime rib stroganoff step by step
  • Prep. Load into the slow cooker your pasta, halved mushrooms, cream cheese, garlic, and beef stock. Cook on high for 45 minutes.
  • Dump. After 45 minutes stir, then add in everything else, stir again and cook for an extra 45 minutes on high.
  • Reduce. Stir and reduce the slow cooker to low and cook for another 30 minutes before serving.

You have now created the best ever beef stroganoff with leftover prime rib, by just quickly prepping a few ingredients and dumping them into the slow cooker.

What To Serve With Beef Stroganoff?

Now that you have made your slow cooker beef stroganoff, I am sure you are looking for serving suggestions.

In the Milner house, we usually have our leftover beef stroganoff on its own as its rather hearty and rather filling.

But if I want to stretch it to another mealtime, I will add in extras such as:

slow cooker Leftover Prime Rib Stroganoff
slow cooker Leftover Prime Rib Stroganoff
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5 from 1 vote

Slow Cooker Leftover Prime Rib Stroganoff

Leftover Prime Rib Stroganoff. How to make a delicious creamy beef stroganoff using prime rib leftovers. Loaded with cream cheese, prime rib, pasta, and mushrooms, this shouts out comfort food heaven.
Prep Time2 minutes
Cook Time2 hours
Total Time2 hours 2 minutes
Servings: 8
Calories: 516kcal


Kitchen Gadgets:

Leftover Stroganoff Ingredients:


  • Load into the slow cooker 3 cups of pasta, mushrooms that you have sliced in half, chives Philadelphia tub and garlic paste.
    How To Make Beef Stroganoff With Leftover Prime Rib?
  • Add your beef stock cube and if using frozen it will melt as your pasta cooks. Cook for 45 minutes on high.
    How To Make Beef Stroganoff With Leftover Prime Rib?
  • After 45 minutes stir the slow cooker and add in everything else and then stir again. Cook for a further 45 minutes.
    How To Make Beef Stroganoff With Leftover Prime Rib?
  • After your 2nd 45 minutes stir and cook for a final 30 minutes on low.
    How To Make Beef Stroganoff With Leftover Prime Rib?


Swap. You can mix and match seasonings and cream cheese flavours. If you don’t like mushrooms, I would recommend swapping for a similar cooking vegetable and one that doesn’t go mushy.
Pasta. Note that as the pasta cooks it soaks up the beef stock, making a very creamy mustard and mushroom sauce.
Thick. If your stroganoff goes too thick, add extra milk, or too thin add extra cream cheese.
Thanks for reading our prime rib beef stroganoff recipe on Recipe This. We have many more slow cooker recipes for you to check out next. Though if you would like more slow cooker leftover ideas, I recommend you try our slow cooker corned beef stew recipe next.


Calories: 516kcal | Carbohydrates: 76g | Protein: 21g | Fat: 14g | Saturated Fat: 7g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Cholesterol: 36mg | Sodium: 334mg | Potassium: 652mg | Fiber: 3g | Sugar: 9g | Vitamin A: 312IU | Vitamin C: 2mg | Calcium: 151mg | Iron: 2mg
Nutrition InfoPlease Note: Nutrition values are our best estimate based on the software we use at Recipe This and are meant as a guide. If you rely on them for your diet, use your preferred nutrition calculator.
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prime rib stroganoff slow cooker
Recipe This

Hi! I am Sam and along with my chef hubby Dom we love sharing with you easy everyday recipes using kitchen gadgets. We are also the authors of The Complete Air Fryer Cookbook, an amazing air fryer cookbook filled with 140+ everyday air fryer recipes. Beyond the air fryer we also love the instant pot, slow cooker, soup maker, ninja foodi, pie marker and several other kitchen gadgets. CLICKING HERE →

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