Guide · 6 min

How to Cook King Oyster Mushrooms

Learn how to cook king oyster mushrooms into browned, meaty slices with a crisp edge, tender center, and quick garlic-butter pan sauce.

By Ana · Updated July 11, 2026

Use store-bought or positively identified edible mushrooms. Identification notes on this page are safety reminders, not a foraging manual — never eat a wild mushroom without expert verification.
Seared king oyster mushroom medallions with garlic butter in a cast-iron skillet
Best heatMedium-high, then medium-low
CutSlice stems into 1-inch medallions and score the cut faces
Cook time6–8 min
FinishGarlic butter, soy sauce, maple syrup, and black pepper

Jump to the recipe ↓ · Compare all cook times →

Why this method works

King oyster stems are dense and hold their shape when sliced thickly. Scoring the cut faces creates more surface area for browning and lets the pan sauce settle into the ridges.

Before you start

Wipe the mushrooms clean and trim only the dry ends. Save the caps for the skillet, too; they cook faster, so add them after the thicker stem pieces.

Seared King Oyster Mushroom Medallions

Prep: 10 minCook: 14 minYield: 2 servings

Ingredients

Instructions

Cook times

MethodTimeDone when
Scallop sear6–8 minDeep gold crust on scored faces.
Oven roast18–22 minSlices tender with browned cut faces.
Grill (planks)6–8 minCut faces striped and gold; center gives easily.

Small fixes that matter

  • Leave space between the medallions so their cut faces can brown.
  • Press the slices gently with a spatula for even contact, but do not flatten them.
  • Add the sweet soy mixture at the end to prevent it from burning.

Variations

  • Lemon-herb: replace the soy-maple finish with lemon juice and chopped parsley.
  • Smoky: add 1/2 tsp smoked paprika to the black pepper.
  • Miso butter: brush the cooked medallions with 1 tbsp butter mashed with 1 tsp white miso.
  • Sandwich: serve the medallions in toasted buns with shredded cabbage and pickles.

Storage and reheating

  • Refrigerate cooked mushrooms in a shallow airtight container within 2 hours.
  • Use leftovers within 3 to 4 days.
  • Reheat in a lightly oiled skillet over medium heat to restore the browned edges.
  • Store fresh king oyster mushrooms in a paper bag in the refrigerator and wipe them clean before slicing.

Frequently asked questions

Do you eat the caps of king oyster mushrooms?

Yes. The caps are edible and can be cooked with the thicker stems. Add them a little later because they soften faster.

How thick should king oyster mushroom slices be?

Cut the stems into slices about 1 inch thick. This gives the outside time to brown while the center stays tender.

Why are my king oyster mushrooms watery?

The pan may be crowded or not hot enough. Cook in batches if needed and wait until the oil shimmers before adding the mushrooms.

Can I grill king oyster mushrooms?

Yes. Brush 1/2-inch planks with oil and grill over medium-high direct heat for 6 to 8 minutes, turning once, then add the sauce after grilling. See the full grilling guide for fire setup and times by variety.

What can replace maple syrup?

Use honey, brown sugar, or 1 tsp (5 ml) mirin.

Good with

creamy polenta, steamed rice, mashed potatoes, charred broccolini, green salad.