Salmon Wellington is my fish-based spin on the classic beef wellington: salmon fillets layered with mushrooms and wrapped in pastry before baking. It looks like the kind of dish you would order at a restaurant, but I make it at home using frozen prata and no dairy at all.

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My husband does not eat beef, so I developed this salmon wellington recipe for our table. Salmon feels fancy but is deceptively easy to make. Only a handful of ingredients, one pan, and about 30 minutes of active work. Perfect when you want to impress without stress!

Why You’ll Love This Recipe

Dairy-free by design: No creamed spinach, no butter-laden pastry. I use mushrooms and frozen prata instead, so this works for anyone avoiding dairy.
Weeknight doable: From fridge to table in about 45 minutes, with only one pan to wash. Fancy enough for guests, easy enough for Tuesday.
Flexible centerpiece: Serve it with steamed vegetables, salad, or potatoes. It adapts to whatever you have, and it always looks like you planned ahead.

The Culinary Secrets Behind This Dish

I pan-fry the salmon before wrapping it because the Maillard reaction creates hundreds of new flavor compounds that raw salmon simply cannot deliver. That brief contact with hot olive oil builds a savory crust and adds fragrance throughout the finished wellington. You could bake the salmon raw inside the pastry, and it would cook through safely, but you would miss that depth.

Mushrooms work here because they are packed with natural glutamates, the same savory backbone that makes creamed spinach appealing, but without any dairy. When you fry shiitake with garlic, you drive off moisture and concentrate that umami. The resulting duxelle-like layer insulates the salmon from the pastry, keeping the fish moist while the prata turns crisp and golden.

What You’ll Need

Equipment

Oven: You need a hot oven at 220 degrees Celsius to blast the prata into golden, flaky layers in 20-25 minutes.
Pan: One pan does triple duty here: mushrooms, salmon, and bacon, building flavor in sequence without extra washing up.
Kitchen towel: Essential for drying salmon before frying and blotting bacon after. Moisture is the enemy of browning and of a crisp pastry base.
Baking tray: A simple flat tray for the two wellingtons to bake evenly without pooling steam underneath.

Ingredients

Mushroom Layer

Olive oil, 4 tbsp: Divided between frying mushrooms and searing salmon. A neutral-flavored oil that carries heat without adding competing flavor.
Garlic, 5 cloves, chopped: Fried briefly with mushrooms to soften its bite and sweeten its edge. Do not burn it, or it turns bitter.
Shiitake mushroom, 250 g, stems removed and chopped: The heart of my dairy-free filling. Umami-dense and meaty, these replace creamed spinach entirely.

Salmon and Bacon

Salmon fillet, 300 g, cut into 2 equal pieces: Center-cut for even thickness. I pan-fry for fragrance, but raw works too. Thaw completely if frozen.
Bacon, 2 strips: A salty, smoky buffer between salmon and mushroom. Blot dry after frying to keep pastry crisp.
Salt and pepper: Season each layer as you go. Under-seasoned mushrooms make the whole wellington taste flat.

Pastry and Finish

Puff pastry or frozen prata, 2 pieces, approx. 20cm by 20cm each: I use prata. Thaw fully before wrapping or it will tear. This is your golden, flaky shell.
Egg, 1: Beaten with water and a pinch of salt for an egg wash that turns the pastry deep gold and slightly glossy.
Water, 1 tbsp: Thins the egg wash so it brushes on evenly without pooling.
Salt, pinch: For the egg wash. It helps the protein set and adds a subtle savory sheen.
Sesame seeds, optional: A nod to the prata’s origins and a little extra crunch on top. Skip if you prefer a cleaner look.

Step-by-Step Cooking Guide

1: Preheat the oven

Get your oven hot. 220 degrees Celsius gives the prata the blast it needs to puff and turn golden in under 25 minutes.

2: Cook the mushroom layer

Heat 2 tablespoons of olive oil in your pan. Fry the mushrooms and garlic for about 2 minutes, until the mushrooms soften and the garlic smells sweet. Season with salt and pepper. Fry for 1 more minute, then scoop out and set aside.

3: Sear the salmon

Pat the salmon dry with a kitchen towel. Moisture is the enemy here. Heat the remaining 2 tablespoons of olive oil. Place salmon skin side down. Turn when the bottom third looks cooked, about 2-3 minutes. Let the flipped side cook one third of the way through, then remove. It will finish in the oven.

4: Crisp the bacon

Fry the bacon in the same pan until crisp. Transfer to a kitchen towel and blot dry. Greasy bacon makes soggy pastry, and nobody wants that.

5: Assemble the wellingtons

Lay one pastry sheet flat. In the center, stack bacon, then mushroom, then salmon, then more mushroom. Fold the sides up and over, then seal both ends. Repeat for the second wellington. Do not worry about perfect parcels, rustic is fine.

6: Egg wash and top

Place both parcels seam side down on your baking tray. Beat the egg with water and a pinch of salt. Brush all over the pastry, then scatter sesame seeds if using.

7: Bake until golden

Bake for 20-25 minutes. The pastry should be deep golden and crisp. If the top browns too fast, your oven runs hot, cover loosely with foil for the last 5 minutes.

8: Serve immediately

Rest for 2-3 minutes if you can wait. Slice through and serve. The contrast of crisp prata, earthy mushroom, and flaky salmon is genuinely exciting!

Ingredient Substitutions & Variations

Cooking should be adaptable! If you’re missing a few items, here is how you can easily swap them out while keeping the same incredible flavor profile:

Ingredient	Substitute	Taste & Texture Impact
Shiitake mushroom	White button mushrooms or cremini	Noticeably different texture, but still delicious. White mushrooms are less meaty and release more water, so fry until almost dry.
Fresh salmon	Frozen salmon fillets, fully thawed	Milder flavor, less umami depth. You may want to add a splash of soy sauce or a few drops of fish sauce to compensate.
Frozen prata	Store-bought puff pastry	Less flaky, more bready. Prata is my preference for this salmon wellington recipe, but standard puff pastry gives a taller, more dramatic rise.
Egg wash	Olive oil or melted dairy-free margarine	Slightly less glossy finish, but acceptable. The color will be more matte, and the salt in the wash helps less with browning.
Bacon	Smoked turkey, anchovies, or seasoned mushrooms	Different aroma, still functional. Smoked turkey or extra mushroom with smoked paprika keeps the savory-salty balance.

Recipe twists:

Variation	Description & Culinary Details
Lap cheong version	Add a layer of finely chopped lap cheong instead of bacon for a Chinese-Singaporean twist. The sweet cured sausage pairs beautifully with shiitake.

Allergen Friendly Adjustments

Gluten-Free: Not as written, because of the puff pastry or frozen prata. Use a gluten-free pastry alternative if you need to avoid wheat. The rest of the filling is naturally gluten-free.
Dairy-Free: Yes, this recipe is already dairy-free. I designed it this way deliberately, using mushrooms instead of creamed spinach and prata instead of butter-laden puff pastry.
Nut-Free: Yes, no nuts in this recipe. The sesame seeds are optional and technically a seed, not a nut, but omit them if you have any concerns.
Egg-Free: No, the egg wash contains egg. You can substitute with a little olive oil or melted dairy-free margarine for browning, though the finish will be less glossy.
Pork-Free: No, this recipe uses bacon. Substitute with a strip of smoked turkey, a few anchovy fillets for umami, or simply extra mushrooms seasoned with smoked paprika.

Serving and Pairing Suggestions

Steamed vegetables: Simple and clean. I like ladyfinger or chye sim with a splash of light soy to balance the richness of the pastry.
Mashed, roasted, or baked potatoes: Classic wellington territory. The starch soaks up any mushroom juices that escape. My family often asks for this combo.
Dry white wine or sparkling water with lime: A cold, crisp drink cuts through the salmon fat and flaky pastry. The acidity refreshes your palate between bites.

Storage, Reheating, and Freezing Guide

Refrigeration: Store leftover wellington in an airtight container for up to 2 days. The pastry will soften in the fridge. This is unavoidable.
Reheating: Revive in a 180 degrees Celsius oven for 10-12 minutes. A microwave makes the pastry rubbery. Do not do it.
Freezing: Not recommended. Cooked salmon changes texture when frozen and thawed, and the prata turns damp and leathery. This is a make-fresh dish.

Frequently Asked Questions (FAQ)

▶ Can I really use frozen prata instead of puff pastry?

Yes, absolutely. I designed this salmon wellington recipe for frozen prata because I avoid dairy. Thaw it fully first, or it will crack when you try to wrap. The result is flakier and more fragrant than you might expect.

▶ What if I do not want to pan-fry the salmon first?

Yes, that is totally fine. Skip the pan-fry and place the raw, seasoned salmon directly on the mushrooms. It will cook through in the oven. You will lose some of that seared fragrance, but the dish still works.

▶ Why is there bacon in a salmon wellington?

It is not traditional, but it works. The bacon adds salt, fat, and a smoky layer that cuts through the richness of salmon and mushrooms. If you are avoiding pork, see the allergen notes for swaps.

▶ How do I make sure the two salmon pieces cook evenly?

Buy one large center-cut fillet around 300 grams and slice it into two equal pieces yourself. This gives you matching thickness, so both wellingtons finish at the same time. I do this every time.

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