Leftover Roast Beef Stroganoff Recipe Quick Mid Week Meal

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This Leftover Roast Beef Stroganoff turns last night’s roast into a brand-new dinner, with tender strips of beef, golden mushrooms, and onions in a creamy paprika sauce. It’s ready in about 25 minutes, all in one skillet, and gives roughly 40 grams of protein per serving before you even add noodles or rice.

What Makes This Leftover Roast Beef Stroganoff Great?

The beef is already cooked, so the whole dish is really about building a rich, savory sauce and then warming the beef through gently at the very end. That keeps it tender instead of tough and dry. A little broth and Worcestershire give the sauce real depth, so it tastes like it simmered far longer than it did.

The Beef

Leftover roast beef is perfect here because it’s already seasoned and tender. Slicing it into thin strips across the grain makes every bite easy to eat and helps it soak up the sauce.

The key thing to know? Cooked beef only needs warming, not cooking. Simmer it too long and it turns chewy, so it goes in last.

What You’ll Need for the Beef

• 1 1/4 lb leftover roast beef, sliced into thin strips across the grain, any juices saved, stays tender when warmed gently in the sauce.

The Mushrooms and Onions

Mushrooms and onions build the savory base of the sauce. Cooking them until properly golden brings out a deep, almost meaty flavor that makes the whole dish taste richer.

A mix of sweet and smoked paprika gives classic stroganoff warmth with just a hint of smokiness. Not overpowering, just really nice with roast beef.

What You’ll Need for the Mushrooms and Onions

• 1 tablespoon olive oil, keeps the butter from burning over higher heat.
• 1 tablespoon butter, helps the mushrooms brown and adds richness.
• 1 medium yellow onion, thinly sliced, turns soft and sweet as it cooks.
• 8 oz cremini mushrooms, sliced, add earthy flavor and a meaty texture.
• 2 cloves garlic, minced, adds a savory, aromatic base.
• 2 teaspoons sweet paprika, gives the sauce its classic warm color and flavor.
• 1/2 teaspoon smoked paprika, adds a gentle smoky note.
• 1/2 teaspoon kosher salt, seasons the vegetables as they cook.
• 1/2 teaspoon black pepper, adds mild warmth.

The Creamy Sauce

This is what turns leftovers into a proper stroganoff. A spoonful of flour and some beef broth create a silky sauce with body, Worcestershire and Dijon bring savory depth and a little tang, and sour cream makes it creamy and rich.

Sour cream goes in last, over low heat. Trust me on this one, a gentle hand keeps the sauce smooth.

What You’ll Need for the Creamy Sauce

• 1 tablespoon all-purpose flour, thickens the sauce so it coats the beef.
• 3/4 cup low-sodium beef broth, builds a rich, beefy sauce without too much salt.
• 1 tablespoon Worcestershire sauce, adds savory depth.
• 1 teaspoon Dijon mustard, brings a light tang that balances the cream.
• 3/4 cup full-fat sour cream, gives the classic creamy stroganoff finish.
• 2 tablespoons fresh parsley, chopped, adds freshness and color.

How to Make Leftover Roast Beef Stroganoff

Soften the Onion

Heat the olive oil and butter in a large skillet over medium heat until the butter melts and starts to foam. Add the sliced onion and cook for about 5 minutes, stirring now and then, until soft and lightly golden.

Brown the Mushrooms

Turn the heat up to medium-high and add the mushrooms. Let them sit for 2 minutes before stirring so they can brown, then cook for 3 to 4 minutes more. They’re ready when golden and most of their liquid has cooked off.

Add the Garlic and Spices

Stir in the garlic, sweet paprika, smoked paprika, salt, and pepper and cook for about 30 seconds, until fragrant. Sprinkle the flour over the mushrooms and onions and stir for 1 minute so it coats everything and loses its raw taste.

Simmer the Sauce

Pour in the broth, Worcestershire, Dijon, and any saved beef juices, scraping up the browned bits from the bottom of the pan. Let it simmer for 2 to 3 minutes, until the sauce thickens and turns glossy.

Warm the Beef

Reduce the heat to low and add the beef strips, stirring to coat them in the sauce. Let them warm through for 3 to 4 minutes, until steaming hot (165°F in the thickest pieces). If the sauce gets too thick, add a splash of broth or water.

Finish with Sour Cream

Stir in the sour cream and heat gently for 1 to 2 minutes, just until it’s hot and creamy, without letting it boil. Taste and adjust the salt and pepper, then stir in the parsley. Serve over egg noodles, rice, or mashed potatoes.

Variations and Customizations

This recipe is easy to adjust depending on what’s left in the fridge. The sauce works with most cooked beef, and the seasonings can be dialed up or down.

• Fresh steak instead of leftovers: sear two 10 oz sirloin steaks over high heat to your preferred doneness, rest them for 10 minutes, then slice and add as you would the roast beef.
• Other leftover meats: roast pork or turkey both work, and chicken broth suits them better than beef broth.
• Crème fraîche: use it in place of sour cream for a richer, milder sauce that’s even less likely to split.
• More vegetables: stir in a couple of handfuls of baby spinach with the beef, or add sliced bell peppers with the onion.
• Extra smokiness: increase the smoked paprika to 1 teaspoon.
• No mushrooms: use a second onion instead and add an extra 1/4 cup broth for more sauce.

Toppings, Add-Ons, and Finishing Touches

Stroganoff is rich and creamy, so something fresh or tangy on top keeps every bite balanced. A little extra herb or crunch makes it feel finished.

• Extra fresh parsley or chopped dill.
• A dollop of sour cream.
• A dusting of paprika.
• Chopped pickles or cornichons, for a tangy contrast.
• Freshly cracked black pepper.
• Crispy fried onions, for crunch.

Storing, Reheating, and Meal Prep

Since the beef has already been cooked once, refrigerate any leftover stroganoff within 2 hours and eat it within 2 days. Reheat gently in a saucepan over low heat with a splash of broth, stirring often, until steaming hot throughout (165°F). Reheat only the portion you plan to eat, and keep noodles or rice stored separately so they don’t soak up all the sauce.

To freeze, cook the recipe up to the point before adding the sour cream, then cool and freeze for up to 2 months. Thaw overnight in the fridge, reheat until piping hot, then stir in the sour cream and parsley just before serving.

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Leftover Roast Beef Stroganoff

Difficulty: Beginner Total Time 30 mins

Cooking Temp: 165  F Servings: 6 Calories: 450

Description

Tender strips of leftover roast beef, golden mushrooms and soft onions in a creamy paprika sour cream sauce, made in one skillet. A quick, comforting way to turn leftover roast into a completely new dinner.

Ingredients

Servings

For the Beef

• 1 ¹⁄₄ lb leftover roast beef, sliced into thin strips

For the Mushrooms and Onions

• 1 tablespoon olive oil
• 1 tablespoon butter
• 1 medium yellow onion, thinly sliced
• 8 oz cremini mushrooms, sliced
• 2 cloves garlic, minced
• 2 teaspoons sweet paprika
• ¹⁄₂ teaspoon smoked paprika
• ¹⁄₂ teaspoon kosher salt
• ¹⁄₂ teaspoon black pepper

For the Creamy Sauce

• 1 tablespoon all-purpose flour
• ³⁄₄ cup low-sodium beef broth
• 1 tablespoon Worcestershire sauce
• 1 teaspoon Dijon mustard
• ³⁄₄ cup full-fat sour cream
• 2 tablespoons fresh parsley, chopped

Instructions

Prepare the beef

1. Using a sharp knife and a cutting board, slice the leftover roast beef into thin strips, cutting across the grain (the direction of the lines running through the meat). Cutting across these lines keeps each strip tender. Save any juices from the beef to add to the sauce later.

Soften the onion

1. Heat the olive oil and butter in a large skillet over medium heat until the butter melts and begins to foam. Add the sliced onion and cook for about 5 minutes, stirring occasionally, until it is soft and lightly golden.

Brown the mushrooms

1. Increase the heat to medium-high and add the mushrooms. Leave them undisturbed for 2 minutes so they can brown, then stir and cook for 3 to 4 minutes more, until golden and most of their liquid has cooked away. The mushrooms will release water at first, this is normal and it will evaporate.

Add the garlic and spices

1. Stir in the garlic, sweet paprika, smoked paprika, salt and pepper and cook for about 30 seconds, until fragrant. Sprinkle the flour over the mushrooms and onions and stir for 1 minute, until it coats everything evenly. The mixture will look slightly dry at this stage, this is expected.

Simmer the sauce

1. Pour in the beef broth, Worcestershire sauce, Dijon mustard and any saved beef juices. Use a wooden spoon to scrape up the browned bits from the bottom of the pan, as these add flavor. Simmer for 2 to 3 minutes, until the sauce thickens and becomes smooth and glossy.

Warm the beef

1. Reduce the heat to low and add the beef strips, stirring gently to coat them in the sauce. Let them warm through for 3 to 4 minutes, until steaming hot and reaching 165°F in the thickest pieces. If the sauce becomes too thick, stir in a splash of broth or water.

Finish with sour cream

1. Stir in the sour cream and heat gently for 1 to 2 minutes, until warm and creamy, without letting the sauce boil. Taste and add a little more salt or pepper if needed. Stir in the parsley and serve warm over egg noodles, rice or mashed potatoes.

Note

Only warm the beef gently at the end. Cooked beef becomes tough and chewy if it simmers for too long.

Keep the heat low after adding the sour cream. If the sauce boils, it may separate and look grainy. Crème fraîche can be used instead of sour cream and is less likely to separate.

If you do not have leftover roast beef, sear 1 1/2 lb sirloin steak in a hot skillet to your preferred doneness, rest it for 10 minutes, then slice it into strips and use it in place of the roast beef.

Since the beef has already been cooked once, refrigerate leftovers within 2 hours and eat within 2 days. Reheat gently in a saucepan over low heat with a splash of broth until steaming hot throughout (165°F). Store noodles or rice separately so they do not absorb the sauce.

To freeze, cook the recipe up to the point before adding the sour cream, cool completely, and freeze for up to 2 months. Thaw overnight in the refrigerator, reheat until piping hot, then stir in the sour cream and parsley just before serving.

Calorie count is an estimate for the stroganoff only and will vary with the cut of beef and exact ingredients used.

Keywords: beef,

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