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Pan-Seared King Oyster Mushrooms

King oyster mushroom recipe transforms these meaty fungi into a show-stopping dish that rivals any protein on your plate. With their thick, satisfying stems and ability to soak up flavors like a sponge, king oyster mushrooms deliver a deeply savory experience perfect for weeknight dinners or impressive entertaining.
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Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings: 4 servings
Course: Main or Side Dish
Cuisine: Asian-inspired
Calories: 145
Ingredients Equipment Method Notes

Ingredients
  

For the Mushrooms
  • 1 pound king oyster mushrooms about 6-8 large mushrooms
  • 3 tablespoons neutral oil vegetable, grapeseed, or avocado
For the Marinade
  • 3 tablespoons soy sauce or tamari for gluten-free
  • 2 tablespoons mirin or rice vinegar with a pinch of sugar
  • 1 tablespoon sesame oil
  • 2 cloves garlic minced
  • 1 teaspoon fresh ginger grated
  • 1 teaspoon maple syrup or honey
  • 1/2 teaspoon black pepper
For Garnish
  • 2 green onions thinly sliced
  • 1 tablespoon sesame seeds
  • Fresh cilantro optional

Equipment

  • Large cast iron skillet or heavy-bottomed pan
  • Sharp chef's knife
  • Cutting board
  • Medium mixing bowl
  • Whisk or fork
  • Pastry brush or spoon for basting
  • Tongs or spatula
  • Measuring spoons

Method
 

  1. Clean the king oyster mushrooms gently with a damp paper towel to remove any dirt. Trim off the very bottom of the stems if they look dried out, but keep as much of the stem as possible since that's where the best texture lives.
  2. Cut each mushroom stem lengthwise into 1/2-inch thick slabs. Score the surface of each slab in a crosshatch pattern about 1/8-inch deep, which helps the marinade penetrate and creates more surface area for crisping.
  3. Whisk together the soy sauce, mirin, sesame oil, minced garlic, grated ginger, maple syrup, and black pepper in your mixing bowl. The marinade should smell pungent and balanced, with none of the ingredients overpowering the others.
  4. Add the scored mushroom slabs to the marinade and toss gently to coat every surface. Let them sit for at least 5 minutes, flipping once halfway through. Don't marinate longer than 15 minutes or they'll become too salty.
  5. Heat your cast-iron skillet over medium-high heat for 2-3 minutes until very hot. Add the neutral oil and swirl to coat the entire surface. Wait until the oil shimmers and just barely starts to smoke.
  6. Remove the mushroom slabs from the marinade (reserve the liquid) and place them scored-side down in the hot pan without crowding. Let them cook undisturbed for 4-5 minutes until deeply golden and caramelized.
  7. Flip each mushroom slab carefully with tongs and cook the second side for another 3-4 minutes. Spoon some of the reserved marinade over the mushrooms during the last minute of cooking, letting it bubble and reduce into a glaze.
  8. Transfer the cooked mushrooms to a serving plate and let them rest for 2 minutes. Sprinkle with sliced green onions, sesame seeds, and cilantro if using. Drizzle any remaining pan sauce over the top for an extra hit of flavor.

Notes

Don't overcrowd your pan when searing. Cook in batches if necessary to maintain high heat, as overcrowding creates steam instead of that gorgeous caramelized crust. Pat mushrooms dry after marinating but before hitting the pan to encourage better browning. Store cooked mushrooms in an airtight container in the refrigerator for up to 4 days. Reheat in a hot skillet for 2-3 minutes per side to restore the crispy exterior.