Beef Fillet Mignon with Gnocchi on Pan-Fried Sourdough

Fillet is fillet, tender and quick. What takes this somewhere special is the slice of crisp, pan-fried sourdough underneath, catching all the resting juices, and that part was my own idea.

Add soft, pillowy gnocchi and you have a plate that looks like it came out of a restaurant but comes together in one pan at home.

It is what I cook when I want to make an evening feel like an occasion. Serve it with a simple green salad. Good bread starts here: my Simple Sourdough Starter.

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What’s the Story Behind Beef Fillet Mignon with Gnocchi on Pan-Fried Sourdough?

So, you’re curious about Beef Intrigue? This dish is one of my latest culinary experiments, and I have to say, it’s quickly become a favourite. I’ve always loved sourdough bread - not just eating it, but making it from scratch. There’s something so satisfying about that crisp, golden crust. And gnocchi? It’s one of those comforting classics I always find myself going back to.

Originally, I was leaning towards a more traditional idea - maybe a creamy pasta dish or even mac and cheese paired with slow-cooked beef brisket. But then, inspiration struck! What if I combined the fluffy, creamy gnocchi I’d been craving with the richness of perfectly cooked beef fillet? And, of course, it had to be served on a crispy slice of pan-fried sourdough for that extra crunch.

That’s how Beef Fillet Mignon with Gnocchi on Pan-Fried Sourdough - or as I like to call it, Beef Intrigue - came to life. It’s a dish that brings together some of my favourite flavours and textures with a bit of a twist. I hope you’ll give it a try - it might just become one of your favourites too!

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The Mushroom and Bacon Sauce

The sauce is the part that ties the plate together, and it is built in one pan while the steaks wait. Onion softened until sweet, then bacon and mushrooms cooked hard enough to take real colour, then double cream and a spoonful of thick yoghurt off the boil. Oregano, black pepper and salt at the end, and that is the whole thing.

The yoghurt is the unusual part and it is worth explaining, because it is also the step most likely to go wrong. It is there for tang: double cream alone is rich and round and the sauce needs something to cut it. But yoghurt is not cream. In cream the fat globules are numerous enough to hold on to most of the milk protein, so there is little left free to clump, which is why it takes a hard simmer in its stride, while yoghurt has been acidified and part-coagulated already, so any more heat, salt, acid or vigorous stirring pushes it the rest of the way and it splits into white specks in thin liquid.

So the rule is gentleness. Get the pan off a proper simmer before the yoghurt goes anywhere near it, stir it in slowly, and warm it through rather than cooking it. If you would rather not think about it at all, use crème fraîche instead: there is far more fat in it, so it takes the heat where yoghurt will not, and it brings the same tang.

Wild mushrooms in place of the white ones are the upgrade worth making here. Chestnut mushrooms are the easy improvement, and a few soaked dried porcini with a spoonful of their soaking liquid turn it into a different sauce altogether.

Equipment You’ll Need

A restaurant-looking plate off very ordinary kit.

• A heavy frying pan Cast iron or a thick stainless pan. It has to hold its heat when four cold fillets land in it, because a thin pan drops temperature and the beef stews in its own juices instead of searing. The same pan then fries the bread in the beef fat, which is where half the flavour of this plate comes from.
• A second pan or saucepan For the sauce, so it can be built while the beef is resting rather than after it. A saucepan is fine, it does not need to be anything special.
• A pot for the gnocchi Wide enough that they are not crowded. They cook in a couple of minutes and float when they are done.
• Tongs For turning the fillets and the bread without stabbing either. A fork lets the juice out of a steak that has spent five minutes building a crust to hold it in.
• A meat thermometer The one piece of kit that turns this dish from a gamble into a decision. Fillet is the most expensive cut in the shop and the least forgiving of a guess.

A Closer Look at the Ingredients

• Beef fillet Four steaks, and this is where the money goes. Ask for them cut thick rather than wide: a thick fillet gives you time to build a crust before the middle overcooks, and a thin one is done through by the time it has any colour on it.
• Gnocchi 500 g of shop-bought is exactly what this is for. They cook in two minutes and go straight into the sauce.
• Streaky bacon and mushrooms 150 g of bacon and 100 g of mushrooms, and both want proper colour rather than just being cooked. The bacon fat is what the mushrooms and onion soften in.
• Double cream and thick yoghurt 180 ml of cream for body and two spoonfuls of yoghurt for tang. The cream can take heat and the yoghurt cannot, which is the whole trick of the sauce.
• Sourdough Four thick slices, fried in butter in the beef pan. This is the part that makes the plate, and it was my own idea: it catches every drop of resting juice that would otherwise be left on the board.
• Pickled red onion To serve. Everything else here is rich, and the plate needs one sharp thing on it.

Chef’s tip: always bring your steak to room temperature before it hits the pan - a cold-from-the-fridge fillet sears unevenly and overcooks at the edges before the middle is done. This dish is my own creation, just me playing with food: a good fillet paired with pillowy gnocchi and crisp sourdough. It came out really well - proof that once you have the technique, you can invent your own.

How to Cook the Fillet

The card says to cook the fillets to your liking, which is honest but not much use if you have not cooked many. Here are the numbers I work to, measured in the middle of the steak.

• Rare Pull at about 48°C, serve at 50 to 52°C. Deep red, soft, and the way a good fillet is at its most tender.
• Medium rare Pull at about 52°C, serve at 54 to 57°C. Pink right through with a darker core. This is where I cook mine.
• Medium Pull at about 58°C, serve at 60 to 63°C. Firmer, still pink in the middle, and about as far as this cut is worth taking.

The reason to stop there is worth knowing. Somewhere between 60 and 65°C the collagen in the sheath around each muscle fibre shrinks and squeezes, the steak suddenly releases a great deal of juice, loses about a sixth of its volume and turns noticeably chewier. Fillet has almost no fat running through it to disguise that, so it goes from tender to dry faster than any other cut. A well-done fillet is the most expensive way to eat dry beef.

Pull them three to five degrees below where you want them, because the outside is far hotter than the middle and that heat keeps moving inward while they rest. Five minutes on a warm plate is enough. If you are cooking for people who want different things, start them all together and take each one out as it reaches its number, which is far easier than trying to time them separately.

This is a whole cut of beef rather than mince, so rare is a normal way to serve it: the bacteria that matter live on the surface and the sear deals with them. That is why a rare steak is fine and a rare burger is not.

How to Make It, Step by Step

Ten steps, the same ten as the recipe card, with the reasons written in.

1. Get everything ready first. Dice the bacon, slice the mushrooms and finely chop the onion before anything goes on the heat, and take the fillets out of the fridge while you do it. Once this dish starts moving it does not stop: the sauce, the gnocchi, the steaks and the bread all finish within a few minutes of each other, and there is no point in the middle where you can go and chop an onion.
2. Sweat the onion. Warm two tablespoons of olive oil in a large pan over a medium heat and cook the onion gently until it turns soft and translucent, five minutes or so. Do not rush it brown. You want sweetness underneath the sauce, and onion caught at high heat turns bitter instead.
3. Brown the bacon and mushrooms. Add the diced bacon and the sliced mushrooms and turn the heat up a little. Cook until the bacon is properly golden and the mushrooms have driven off their water and started to colour. Mushrooms release a surprising amount of liquid and until it has boiled away they are steaming rather than browning, so give it longer than feels necessary. This is where the savoury depth of the sauce comes from and it cannot be added later.
4. Cream in, yoghurt in, gently. Turn the heat down low, pour in the double cream and let it bubble very gently for a couple of minutes to thicken. Then take the pan off a proper simmer before you stir in the yoghurt, and stir it slowly. Yoghurt has already been acidified and part-set, so heat, salt and hard stirring all push it into splitting, where the cream is fat-rich enough not to care. Warm it through for two or three minutes at the barest heat and it stays glossy. Crème fraîche in its place is much steadier, if you have it.
5. Season it. Oregano, plenty of black pepper and a pinch of salt. Go carefully with the salt: the bacon has already brought a good deal of its own, and salt is one of the things that will curdle the yoghurt if you add it hard into a hot pan.
6. Cook the gnocchi and fold them in. Boil the gnocchi in well-salted water until they float, which takes about two minutes, then lift them straight into the sauce with a slotted spoon and turn them through it. Taste and adjust now. If the sauce has tightened, a spoonful of the gnocchi water or a splash of milk loosens it without thinning the flavour.
7. Sear the fillets. Season the steaks with salt and pepper and pat them dry. Heat a tablespoon of oil in a heavy pan until it is properly hot, then lay the fillets in without crowding them, in two batches if the pan is not big enough. Leave them alone to build a crust before you turn them, and take them out at three to five degrees below the temperature you want. Rest them on a warm plate for five minutes.
8. Fry the sourdough in the same pan. Butter the slices and fry them in the pan the beef just came out of, over a medium heat, until both sides are golden. Do not wash that pan first. The browned fat and fond left behind is the best thing in it, and this is the step that turns a slice of toast into the base of the plate.
9. Build it. A slice of fried sourdough on each plate, a generous spoonful of the gnocchi and sauce over it, and the rested fillet sliced across and laid on top. Pour any juice left on the resting plate over the lot: the bread is there to catch it.
10. Serve it straight away. With the pickled red onion alongside, and a sharp green salad if you want anything else at all. This is a plate that waits for nobody, so have everyone sitting down before you start building it. Smacznego!

Recipe Card for Beef Fillet Mignon with Gnocchi

Recipe Card

Beef Fillet Mignon with Gnocchi on Pan-Fried Sourdough

Fillet steak on a slice of sourdough fried in the beef pan, with gnocchi in a creamy bacon and mushroom sauce. A restaurant plate built at home in about an hour.

★★★★★ 5 from 1 vote · Rate this recipe

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Prep

20 min

Cook

30 min

Total

50 min

Serves

4

Per serving

710 kcal

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Equipment I Use

Cast Iron Griddle PanTongsKitchen Thermometer

Ingredients

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Gnocchi in Mushroom & Bacon Sauce Ingredients:

500 g gnocchi 150 g streaky unsmoked bacon 100 g white mushrooms, sliced 1 medium-sized onion, peeled and diced 2 tbsp olive oil 180 ml double cream 2 tbsp thick natural yoghurt 1/2 tsp dried oregano Generous sprinkle of black pepper Pinch of Salt, adjusted to preference

Additional Ingredients for the Dish:

4 thick slices of sourdough bread 80 g butter 4 beef fillets 1 tbsp olive oil Black pepper to taste Salt to taste Pickled red onion for serving

Instructions

Tap a step to tick it off as you cook.

Instructions for Gnocchi in Mushroom & Bacon Sauce:

1

Preparation

Prepare all your ingredients. Dice the bacon, slice the mushrooms, and finely chop the onion.

2

Sweat the Onion

In a large frying pan or saucepan, heat the olive oil over medium heat. Add the finely diced onion and sweat until it becomes translucent.

3

Cook the Bacon

Add the diced bacon and mushrooms to the pan with the onion and increase the temperature slightly. Cook until the bacon starts to turn golden brown.

4

Add Cream

Reduce the heat to low. Pour in the double cream and stir. Allow the mixture to simmer gently for a couple of minutes. Take the pan off a proper simmer, then stir the thick natural yoghurt in slowly and warm it through for a minute without letting it bubble again. Boiled hard, yoghurt splits and turns the sauce grainy.

5

Season

Sprinkle in the dried oregano, black pepper, and a pinch of salt. Stir well to combine.

6

Combine

Taste and adjust seasoning if necessary. Pour the sauce over cooked gnocchi and toss to coat. (Alternatively you can cook them in the sauce, just add a little bit of milk)

Instructions for Gnocchi Beef Intrigue:

7

Prepare the Beef Fillets

Season the beef fillets with salt and black pepper. Heat 1 tbsp of olive oil in a frying pan over medium-high heat and sear the fillets, turning every minute or so, until the middle reads about 48C for rare, 52C for medium rare or 58C for medium. Rest them for five minutes before slicing: the centre climbs another three to five degrees while they sit.

8

Pan-Fry the Sourdough

Butter the bread slices. In the same pan, place the sourdough slices and fry until golden brown on both sides. Remove and set aside.

9

Assemble the Dish

Place a slice of pan-fried sourdough on each plate. Spoon a generous amount of the Mushroom & Bacon Sauce with Gnocchi over the sourdough. Slice the beef fillets and arrange them on top of the gnocchi.

10

Serve

Serve the dish immediately with a side of pickled red onion. Pair with a glass of red wine or a beverage of your choice for a complete dining experience. Smacznego!

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Chef’s notes＋

Temperatures for the fillet, measured in the middle: pull at about 48C for rare, 52C for medium rare, 58C for medium, and rest five minutes. The centre keeps rising three to five degrees off the heat. Past about 60C the meat dumps its juice and turns chewy, which is a waste of this cut.

The yoghurt is the step to be careful with. Take the pan off a proper simmer first, stir it in slowly and only warm it through. Yoghurt is acidic and low in fat, so heat, salt and hard stirring will split it where the double cream is unbothered. Creme fraiche in its place is much steadier under heat.

Do not wash the pan between the beef and the bread. The fat and fond the steaks leave behind is what makes the sourdough worth eating.

Everything lands at once, so chop and measure before anything goes on the heat.

Nutrition per serving＋

710 kcalProtein 38 gCarbs 45 gFat 45 gSat fat 20 gFibre 4 gSugar 6 gSodium 850 mgServing 580 g

Beef Fillet Mignon with Gnocchi on Pan-Fried Sourdough · https://chefsbinge.com/beef-fillet-mignon-with-gnocchi-on-pan-fried-sourdough/

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FAQ for Beef Fillet Mignon with Gnocchi

A Few Words from the Chef

This one is mine from start to finish. I wanted the fillet and the gnocchi on the same plate and could not think what to put underneath them, and the fried sourdough was the answer: it soaks up everything the beef gives back while it rests. It is what I cook when an ordinary evening needs to feel like something. Tell me in the comments if you find a better base for it than I did.