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This miso butter salmon is an easy weeknight dinner that feels a little special without much extra work. The salmon is coated with a savory miso butter spread, then baked over zucchini, yellow squash, and mushrooms in a partially open parchment packet.
It’s a simple one-packet dinner with tender salmon, flavorful vegetables, and very little cleanup.
Why This Miso Butter Salmon Works
- It uses a miso butter spread, not a marinade. You don’t need to plan ahead or wait for the fish to sit. Just mix the miso butter, spread it over the salmon, and bake.
- The parchment wrap helps protect the fish. Instead of leaving the salmon fully exposed on a sheet pan, this loose candy-wrap shape helps it bake more gently. Since the center stays open, the fish doesn’t trap too much steam and turn waterlogged.
- The vegetables cook right under the salmon. As the fish bakes, the zucchini, squash, and mushrooms catch the melted miso butter and salmon juices underneath. That means they become part of the dish, not just something extra on the side.
- It’s built for a fast, easy dinner. There’s no marinating, no extra sauce to make later, and no second pan for the vegetables. Everything cooks together in one packet, so dinner feels complete without much extra work.
Main Ingredients You’ll Need
- Salmon: Center-cut fillets that are a little over 1-inch thick work best here. They bake more evenly and stay juicier than thinner tail pieces. Skin-off is best for this recipe because the fish sits directly over the vegetables in one parchment packet, so it’s cleaner and easier to eat without having to remove the skin at the table.
- White miso paste: Use white miso for this dish. It has a milder, smoother flavor that works well with butter and salmon without tasting too sharp. Not all white miso brands are the same, though.
Tip
My favorite miso paste for this recipe is Maruman Organic White Miso Paste because it has a good salty-sweet balance and a thicker texture that works well for miso butter. One I don’t recommend here is the light and sweet miso that comes in a squeezable pouch. It’s not a bad miso, but it’s much thinner and more watery, so it won’t give the fish the same flavor or texture you want in a compound miso butter.
- Ghee or butter: This is what makes the dish miso butter salmon, not just miso salmon. If possible, I recommend ghee over regular butter. In my testing, ghee gives the miso butter a richer, more concentrated flavor because it’s clarified and has less moisture. It’s also already soft and spreadable, so you don’t need to wait for it to come to room temperature.
- Garlic: Fresh grated garlic blends into the miso butter more smoothly than chopped garlic and gives the fish a more even flavor. It’s a small amount, but it adds a lot to the butter spread.
- Zucchini, yellow squash, and mushrooms: These vegetables work especially well here because they cook quickly and don’t release too much liquid. That makes them a good match for this packet-bake method. As they cook under the salmon, they catch the melted miso butter and juices, so they feel like part of the dish instead of a separate side.
- Sake or dry sherry: A small splash adds light aroma and helps season the fish without turning this into a marinade recipe. If you need a gluten-free option, use dry sherry.
- Scallions: Sliced scallions added at the end give the dish a fresh finish and help balance the richer butter-miso flavor.
How to Make Miso Butter Salmon
Step 1: Make the miso butter spread. In a small bowl, mash together the ghee or softened butter, white miso, and grated garlic until smooth. The mixture should be thick and spreadable, not thin like a marinade. That gives the fish a quick flavor boost without any extra time.
Step 2: Prep the vegetables. Slice the zucchini and yellow squash into small, even rounds so they cook at the same rate. Trim the root end from the mushrooms and separate them into smaller pieces if needed. These vegetables work well here because they cook quickly and don’t release too much liquid as they bake.
Step 3: Layer the vegetables under the fish. Arrange the vegetables first in a single layer with a slight overlap, then place the salmon right on top. This does two things: it keeps the fish from sitting directly on the hot parchment, and it lets the vegetables soak up the melted miso butter and salmon juices underneath. That’s part of what makes this feel like a full one-packet meal, not just salmon with vegetables on the side.
Step 4: Use a loose candy-wrap shape, not a sealed packet. This part matters. You want the parchment tucked up around the fish so it gives the salmon some protection in the oven, but the center should stay open. If you seal it too tightly, the fish traps too much steam and can turn waterlogged. If the fish is left fully exposed, the top is more likely to dry out or darken too quickly. This looser candy-wrap shape helps the salmon bake more gently while still letting excess steam escape.
Step 5: Bake until the salmon is just cooked through. Bake on the center rack at 400°F (200°C) for 12 to 13 minutes, but start checking at 12 minutes since the exact timing depends on the thickness of your fillets. The salmon should look mostly opaque and flake easily, with just a faint blush in the center. It’s better to stop a little early and check, since the fish will continue to cook slightly from the residual heat after it comes out of the oven.
Step 6: Open and serve right away. Carefully open the packets because hot steam will escape. Spoon the melted miso butter and juices over the fish and vegetables, then finish with scallions. Since everything cooks together in one packet, it’s an easy dinner that still feels a little special.
What to serve with it
This miso butter salmon already comes with vegetables tucked into each packet, so you really only need something simple on the side. My favorite is rice cooker white rice because it soaks up all the melted miso butter and juices so well.
If you want to round out the meal a little more, pair it with something light and fresh like Japanese cucumber salad. A simple soup also works nicely here. If you’d like to make it a fuller dinner, daikon soup is a great match.
Miso butter salmon recipe
Ingredients
- 2 piece center-cut salmon fillets 6 to 7 oz each (about a little over 1 inch thick), skin removed
- 2 tbsp ghee or butter softened to room temperature
- 2½ tsp white miso paste
- 0.21 oz garlic cloves grated (about 2 small cloves)
- 1 small zucchini 6 oz / 170 g
- 1 small yellow squash 6 oz / 170 g
- 2.5 oz assorted mushrooms such as brown or white beech mushrooms, shiitake, or button mushrooms
- Drizzle Olive oil for the vegetables and mushrooms
- ¼ tsp coarse sea salt divided, plus a light sprinkle for the vegetables
- ⅛ tsp ground black pepper divided, plus a light sprinkle for the vegetables
- ½ tbsp sake or dry sherry
- ½ tsp brown sugar
- 2 scallions thinly sliced into small rounds
Equipment
- Foil paper to line the sheet pan
- 2 pieces parchment paper each about 16½ x 12¾ inches, for wrapping the fish
- 1 large sheet pan
Instructions
- Before you start: You’ll be making 2 partially-wrapped parchment packets. The ingredients are divided evenly between the 2 packets. The measured salt and pepper are also divided between the 2 salmon fillets. Lightly season the vegetables separately with a small extra sprinkle of salt and pepper.
- Preheat the oven: Preheat the oven to 400°F (200°C). Line a large sheet pan with foil. Cut 2 pieces of parchment paper, about 16½ x 12¾ inches each.
- Remove the skin: If your salmon fillets have skin on, use a sharp knife to remove it, then pat the fillets dry.
- Make the miso butter: In a small bowl, mash together the ghee (or softened butter), miso paste, and grated garlic until smooth.
- Prepare the vegetables: Slice the zucchini and yellow squash into small rounds. Trim off the root end of the beech mushrooms, then gently separate them with your hands. If using button mushrooms, quarter them.
- Assemble the packets: Lay 1 piece of parchment paper for each portion on top of the foil-lined sheet pan. Arrange the zucchini, yellow squash, and mushrooms in a single layer in the center of each parchment sheet. Drizzle lightly with olive oil and season with a small sprinkle of salt and pepper.
- Season the fish: Place 1 salmon fillet over each bed of vegetables. Drizzle each fillet with sake, then season with the divided salt, black pepper, and brown sugar. Spread the miso butter evenly over the top of each fillet.
- Wrap the packets: Wrap each packet in a candy-wrapper style. Bring the two short ends of the parchment inward and twist them tightly like a wrapped candy, leaving the center open at the top. The parchment should sit up around the salmon like a loose boat, which helps protect the fish from drying out while allowing excess steam to escape.
- Bake: Bake on the center rack for 12 to 13 minutes, checking at 12 minutes. The salmon should look opaque and flake easily, with a faint blush in the center.
- Serve: Carefully open the parchment packets and watch for hot steam. Spoon the melted miso butter and juices over the fish and vegetables. Garnish with scallions and serve warm.
Notes
- Make-ahead: You can mix the miso, ghee or butter, and grated garlic up to 1 week ahead. Store it in the fridge, then let it soften until spreadable before using.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
FAQs
Yes, but for this recipe I recommend removing the skin first. Since the salmon sits right over the vegetables in one parchment packet, skin-off makes the dish cleaner and easier to eat. You won’t need to stop and separate the skin from the fish while you’re enjoying the vegetables underneath.
Yes. Steelhead trout is the best substitute here because it has a similar rich texture and cooks much like salmon. Just keep in mind that the exact bake time may change a little depending on how thick the fillets are, so start checking early.
That white stuff is called albumin. It’s a protein that sometimes comes out of the fish as it cooks, and it’s completely safe to eat. You’ll usually see more of it if the salmon cooks a little too hot or a little too long. This parchment-wrap method helps reduce that by baking the fish more gently.
I don’t recommend it for this recipe. A fully sealed packet traps more steam, which can make the fish and vegetables wetter than you want. Leaving the center slightly open lets excess steam escape, so the salmon stays moist without turning waterlogged.
More Miso Fish and Miso Butter Dishes
If you enjoy this miso butter salmon, here are a few more dishes to try next:
- Baked trout with miso butter: A close match if you want the same rich miso butter flavor on a different fish.
- Boiled cod with miso: A good choice if you want a more traditional miso-marinated fish dish.
- Sautéed asparagus with miso butter: An easy vegetable side if you love the flavor of miso butter and want to use it in other dishes.
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