This creamy steak pasta is a hearty pan sauce recipe made with seared striploin steak, portobello mushrooms, rigatoni, chicken stock, heavy cream, Parmesan, and a little garlic butter. I make it this way because the steak gives the sauce a deep browned base, while the mushrooms and reduced stock keep the cream from tasting flat or too heavy. The mistake to avoid is adding the cream before the stock has reduced enough, because that is how you end up with a pale, watery sauce instead of something glossy that clings to the pasta.

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This recipe is based on my YouTube video, with a few adjustments since publication to make the proportions easier to reproduce at home. In the video, the idea was simple: 300 grams pasta, 300 grams steak, 300 grams mushrooms. For this written version, I kept that same spirit but tightened the sauce so the result is more consistent.

This dish sits somewhere between a steak dinner and a creamy pasta. It is not a light tomato pasta, and it is not a classic mushroom pasta either. It is richer, more bistro-style, and made for days when you want a full plate that feels like a proper meal.

What Makes This Recipe Different

The main difference here is that the steak is not just tossed into cream. It is seared first, then the pan is used for the onions, mushrooms, stock, and cream. That brown layer at the bottom of the pan is important. It gives the sauce a beefy, roasted taste without needing a long simmer.

I prefer to cut the steak after searing instead of cooking small pieces from raw. Steak pieces can dry out quickly when cooked in a hot pan from the start. Searing the whole steak first gives better colour, then the meat only needs to warm through at the end.

The other important point is the stock reduction. A full 2 cups of chicken stock may sound like too much, but it works if you reduce it almost dry before the cream goes in. What I look for here is a pan that still smells like mushrooms and beef, but no longer has a pool of liquid sloshing around.

If you want something similar but without the steak, my creamy mushroom pasta stays more focused on the mushroom side. If you want the beef and mushroom flavour in a more classic sauce, beef stroganoff with mushrooms is the closer cousin. This one is heavier, creamier, and more of a steakhouse pasta.

Ingredients You Need

Use a short pasta that can catch sauce. Rigatoni is excellent because the cream gets inside the tubes, but penne, tortiglioni, or another sturdy short pasta will work.

For the steak, I use striploin because it has enough fat and flavour for a quick sear. Ribeye also works, though it will make the dish richer. Sirloin is fine too, but keep an eye on it because it can dry out faster.

Portobello mushrooms give the sauce body. They shrink a lot, so the amount may look large at first. Once they hit the hot pan, they release water, darken, and become much more concentrated.

The garlic butter is a small but important touch. If you like that flavour, you might also enjoy my garlic butter pasta with Parmesan, which is simpler and more focused on that garlic-butter base.

You will need dry rigatoni, striploin steak, portobello mushrooms, red onion, chicken stock, heavy cream, cognac, garlic butter, duck fat or butter, Parmesan, chives, salt, and black pepper.

Step-by-Step Instructions

Prepare the steak, vegetables, and pasta water

Take the steak out of the fridge before cooking so it is not ice-cold when it hits the pan. Dice the red onion into medium pieces. Cut the portobello mushrooms into chunky pieces, not tiny bits, because they will shrink as they cook.

Bring a large pot of salted water to a boil. For this amount of pasta, I use plenty of water and enough salt so the pasta is seasoned from the inside, not just coated later.

Sear the steak

Heat a large skillet until very hot. Add a little duck fat or butter, then sear the steak on both sides until nicely browned. You are not trying to fully cook it here. The goal is colour.

Deglaze or flambé with cognac if you are comfortable doing so. If not, simply add the cognac off the flame and let it bubble for a few seconds. Remove the steak, cover it loosely, and keep the juices.

You know the pan is ready for the next step when the bottom has browned spots but nothing smells burnt.

Cook the onions and mushrooms

Add a little more fat to the same pan, then add the diced onion. Season lightly with salt and pepper. Cook until the onion softens and starts to lose its raw smell.

Add the garlic butter, let it melt, then add the mushrooms. At first, the pan will look full. Keep cooking and turning. The mushrooms will release water, then shrink. The mistake to avoid is stopping too early. If the mushrooms are still sitting in liquid, the cream sauce will be thin.

Reduce the stock and cream

Add the chicken stock and scrape the pan well. Let it reduce until the liquid is almost gone and the mushrooms look glazed. This step matters more than the exact time. A wide pan reduces faster, a smaller pan takes longer.

Add the heavy cream and bring it back to a steady simmer. Let it reduce until it looks creamy and coats the spoon. It should not be stiff, but it should no longer look like milk.

Cook and finish the pasta

Cook the rigatoni until al dente. Save a little pasta water before draining.

Add the pasta to the mushroom cream sauce and toss well. Add Parmesan and chives, then stir again. If the sauce gets too thick, loosen it with a splash of pasta water.

Cut the steak into bite-size pieces, then add it back with its juices. Toss gently just long enough to warm the meat. Do not boil the steak in the sauce.

The finished pasta should look glossy, creamy, and well coated, with pieces of steak and mushrooms in every spoonful. Serve it right away with more Parmesan and chives.

Why the Proportions Work

The original video used an easy memory trick: equal weights of pasta, steak, and mushrooms. That works well because the dish stays balanced. You get enough pasta to carry the sauce, enough mushrooms to give body, and enough steak to make it feel like a real beef dinner.

The adjustment I make for the written recipe is the sauce. For 10 1/2 ounces of pasta, 1 cup of cream is generous but not ridiculous. The 2 cups of stock are there for flavour, not volume, so they must reduce before the cream goes in.

If you split this into two very large plates, it becomes the big 1500-calorie-style meal from the video. Written as four regular servings, it is still hearty, but more reasonable for a weeknight dinner. It is protein-rich and filling, but it is also a cream pasta with steak, cheese, and fat, so it belongs in the comfort-food category.

For another steak-focused dinner with cream, try steak with tarragon cream sauce. For a faster bite-size version, 15-minute garlic butter steak bites are a good option.

Substitutions

You can replace striploin with ribeye, sirloin, or leftover grilled steak. If using cooked leftover steak, do not sear it again. Slice it and add it at the end only to warm through.

Portobello mushrooms can be replaced with cremini mushrooms. They cook a little faster and give a milder flavour. If you want a more mushroom-forward dish, use a mix of cremini and wild mushrooms, similar to the flavour direction in wild mushroom steak with cepes.

The cognac is optional. It adds a steakhouse-style flavour, but you can skip it and simply deglaze with a splash of stock. If you want that flambéed mushroom idea in a more direct steak recipe, my steak with flambéed mushroom sauce is the better match.

For the cream, use heavy cream. Half-and-half can work, but the sauce will be thinner and easier to split if boiled too hard. Parmesan can be replaced with Grana Padano or aged cheddar, but Parmesan keeps the sauce cleaner and less oily.

You can also make the pasta from scratch if you want a more handmade version. My fresh pasta without a machine is useful if you want to turn this into a weekend project instead of a quick creamy dinner.

FAQ

Can I use another cut of steak?

Yes. Striploin, ribeye, sirloin, or even hanger steak can work. The key is to sear it quickly, rest it, then add it back at the end. Avoid simmering sliced steak in the cream sauce for several minutes.

Why use chicken stock with beef?

Chicken stock gives body without making the sauce too dark or heavy. Beef stock can work, but it may make the sauce taste closer to gravy. If using beef stock, reduce it carefully and check the salt before adding Parmesan.

Can I skip the cognac?

Yes. Use a splash of chicken stock to deglaze the pan instead. You will miss a little depth, but the recipe still works.

Why is my sauce watery?

The stock was probably not reduced enough, or the mushrooms were not cooked long enough before adding the stock. Cook the mushrooms until most of their water is gone, then reduce the stock until the pan is nearly dry before adding cream.

Can I make it ahead?

It is best served right away. Cream pasta thickens as it sits. If reheating, use low heat and add a splash of water, stock, or cream to loosen the sauce.

What pasta shape works best?

Rigatoni, penne, tortiglioni, and fusilli all work. Avoid very thin pasta because the sauce is rich and chunky.