Stroganoff earns its one-pan reputation honestly: sear the beef, build the sauce in the fond it leaves behind, then let the noodles cook right in the broth so they pick up flavor as they go. Sour cream stirred in at the end, off direct heat, keeps the sauce silky instead of grainy — the one place patience actually matters here.

One-Pan Beef Stroganoff with Egg Noodles

Scale

Method

Season the beef with the salt and pepper. Heat 1 tablespoon of the butter and the olive oil in a large skillet over high heat. Sear the beef in two batches so it browns rather than steams, about 2 minutes a side, then move it to a plate.
6 min
Add the remaining butter to the skillet with the onion. Cook over medium heat, stirring occasionally, until softened, about 4 minutes.
4 min
Add the mushrooms and cook, stirring occasionally, until they release their liquid and it cooks away, about 8 minutes.
8 min
Stir in the garlic and cook until fragrant, about 30 seconds. Sprinkle the flour over everything and stir to coat, cooking another minute to take the raw taste off it.
2 min
Pour in the beef broth, scraping up the browned bits from the bottom of the pan. Stir in the Dijon mustard and Worcestershire sauce and bring to a simmer.
3 min
Add the egg noodles, pushing them down so they're mostly submerged. Cover and simmer, stirring once or twice, until the noodles are tender, about 12 minutes.
12 min
Return the beef and any juices from the plate to the skillet. Turn the heat to low, stir in the sour cream, and warm through gently — don't let it boil, or the sauce will separate. Season with more salt and pepper to taste.
3 min
Scatter with the parsley and serve straight from the skillet.

Substitutions

Sirloin steak — Flank steak works the same way. Or brown 1.5 lb ground beef instead and skip the slicing.
Cremini mushrooms — White button mushrooms, though cremini give a deeper flavor.
Wide egg noodles — Pappardelle broken in half. Check the simmer time against the package, since dried shapes vary.
Sour cream — Full-fat plain Greek yogurt, stirred in off the heat so it doesn't curdle.
Dijon mustard — Whole-grain mustard, for more texture in the sauce.

Storing leftovers

Keeps 3 days in the fridge in a sealed container. The noodles keep absorbing sauce as they sit, so it thickens — loosen with a splash of broth or water when reheating. Reheat gently over low heat, stirring often, and keep it below a simmer so the sour cream doesn't split.

Questions

Why did my sauce split?

Sour cream curdles above a simmer. Bring the heat down before adding it, stir it in off direct high heat, and don't let the pan boil afterward.

Can I use ground beef instead of steak strips?

Yes. Brown 1.5 lb ground beef in place of the sliced sirloin, breaking it up as it cooks, then continue with the recipe as written.

Do the noodles really cook in the sauce?

Yes, right in the broth — that's what keeps this to one pan. Keep them mostly submerged and stir once or twice so they cook evenly.

What should I serve with it?

It's a full plate on its own, but a simple green salad or steamed green beans balances the richness if you want something alongside.