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Miso-Glazed Trumpet Mushroom “Scallops”

Miranda | The Herby Eater
These miso-glazed trumpet mushroom “scallops” are a flavorful, plant-based twist on a seafood classic. Marinated in white miso, soy sauce, nori, and maple syrup, then pan-seared and served over creamy edamame purée—they’re fancy enough for date night but simple enough for a weeknight.
Prep Time 10 minutes
Cook Time 10 minutes
Marinading Time 4 hours
Total Time 4 hours 20 minutes
Course Appetizer, Dinner, Main Course
Cuisine American, Asian-Inspired, California-Inspired
Servings 2 servings

Equipment

  • Sharp knife
  • Shallow bowl or container for marinating
  • Medium sauté pan or skillet
  • Small saucepan or steamer (for edamame)
  • Blender or food processor
  • Spatula or tongs

Ingredients
  

For the Trumpet “Scallops”

  • 3 large trumpet mushrooms aka king oyster, stems only
  • 1 tablespoon white miso paste
  • 1 tablespoon soy sauce or tamari
  • 1 teaspoon maple syrup
  • 1 sheet nori finely crumbled or torn
  • ¼ cup hot vegetable stock or hot water
  • Neutral oil for searing (e.g., avocado or grapeseed)

For the Edamame Purée

  • cups shelled edamame thawed if frozen
  • 1 clove garlic minced
  • Juice of ½ lemon
  • 1 –2 tablespoons olive oil
  • Salt to taste
  • Water or additional olive oil as needed to blend

For Garnish

  • Fresh parsley or microgreens
  • Extra drizzle of the miso marinade reduced (optional)

Instructions
 

  • Wipe the trumpet mushrooms clean. Slice the stems into 1-inch thick rounds.
  • On one flat side of each round, score a shallow “X” about ¼ inch deep—this helps the marinade soak in and gives a scallop-like texture.
  • In a shallow bowl, whisk together white miso, soy sauce, maple syrup, nori, and hot vegetable stock. The heat from the stock helps dissolve the miso and activates the umami.
  • Place the mushrooms cut-side down into the marinade. Let them soak for 30 minutes, flipping once halfway through if needed.
  • While the mushrooms marinate, steam or simmer the edamame until tender (about 5 minutes).
  • Transfer to a blender or food processor with garlic, lemon juice, olive oil, and a pinch of salt. Blend until smooth, adding a splash of water or more oil if needed for consistency.
  • Taste and adjust seasoning. Set aside.
  • Heat a pan over medium-high heat with a little oil.
  • Remove mushrooms from the marinade (reserve it if you’d like to reduce and drizzle later).
  • Sear mushrooms, scored side down first, for about 2–3 minutes per side until golden and caramelized.
  • Spread a generous swipe of edamame purée on each plate.
  • Top with 3–4 mushroom "scallops" per plate.
  • Garnish with parsley or microgreens, and optionally drizzle with reduced marinade.

Notes

Nori tip: If you don’t have sheets, you can use furikake seasoning or a sprinkle of seaweed flakes.
 
Leftovers: Store mushrooms and purée separately in airtight containers in the fridge.
 
Reheat mushrooms in a hot pan to maintain texture.
Keyword Appetizer, Dairy-Free, Dinner, Gluten Free, Main, Plant Based, Vegan, Vegetarian