Cast-Iron Seared Lion's Mane 'Filet Mignon' with Garlic-Thyme Butter

🌍 Cuisine: Modern American
🏷️ Category: Main Course
⏱️ Prep: 15 minutes
🍳 Cook: 25 minutes
πŸ‘₯ Serves: 2 servings

πŸ“ About This Recipe

Experience the culinary alchemy of transforming the shaggy Lion's Mane mushroom into a succulent, meaty masterpiece that rivals a high-end steak. This recipe utilizes a specialized 'press-and-sear' technique to condense the mushroom's delicate fibers into a dense, satisfying texture bursting with umami. Finished with a luxurious baste of vegan garlic butter and fresh herbs, it’s a sophisticated plant-based entree that will impress even the most devoted carnivores.

πŸ₯— Ingredients

The Mushrooms

  • 1 lb Lion's Mane Mushroom (two large clusters or four medium ones)
  • 2 tablespoons Extra Virgin Olive Oil (for the initial sear)

The Umami Marinade

  • 2 tablespoons Soy Sauce or Tamari (low sodium preferred)
  • 1 teaspoon Worcestershire Sauce (ensure vegan-certified if needed)
  • 1/2 teaspoon Smoked Paprika (for a subtle char flavor)
  • 1 teaspoon Balsamic Vinegar (for acidity and color)
  • 1/2 teaspoon Garlic Powder
  • 1/2 teaspoon Black Pepper (freshly cracked)

The Finishing Baste

  • 3 tablespoons Vegan Butter (high quality, like Miyoko's)
  • 3 cloves Fresh Garlic (smashed)
  • 4 sprigs Fresh Thyme
  • 1 sprig Fresh Rosemary
  • 1 pinch Flaky Sea Salt (for finishing)

πŸ‘¨β€πŸ³ Instructions

  1. 1

    Begin by cleaning your Lion's Mane mushrooms. Use a soft brush or dry paper towel to remove any debris; avoid washing them with water as they act like sponges and will become soggy.

  2. 2

    In a small bowl, whisk together the soy sauce, Worcestershire sauce, smoked paprika, balsamic vinegar, garlic powder, and black pepper to create the umami marinade.

  3. 3

    Preheat a heavy cast-iron skillet over medium-high heat for about 3-5 minutes until it is very hot but not smoking.

  4. 4

    Add 2 tablespoons of olive oil to the hot skillet. Place the whole Lion's Mane clusters into the pan, ensuring they have enough space between them.

  5. 5

    The Secret Step: Place a second heavy skillet (or a bacon press) directly on top of the mushrooms to flatten them. Press down firmly to encourage moisture release and create a 'steak' shape.

  6. 6

    Sear for 3-4 minutes under the weight. You should hear a vigorous sizzle as the water evaporates and the fibers compress.

  7. 7

    Remove the weight, flip the mushrooms over, and replace the weight. Sear the other side for another 3-4 minutes until both sides are golden brown and the mushroom is about half its original thickness.

  8. 8

    Using a pastry brush, liberally coat both sides of the compressed mushrooms with the umami marinade while they are still in the pan.

  9. 9

    Reduce the heat to medium. Flip the mushrooms once more to caramelize the marinade for 1 minute per side. Be careful not to burn the sugars in the balsamic and soy sauce.

  10. 10

    Add the vegan butter, smashed garlic cloves, thyme, and rosemary to the empty spaces in the skillet.

  11. 11

    Once the butter is foaming, tilt the pan slightly and use a large spoon to continuously pour the hot herb-infused butter over the mushrooms (basting) for 2-3 minutes.

  12. 12

    Remove the mushrooms from the pan and let them rest on a warm plate for 2 minutes to allow the juices to redistribute.

  13. 13

    Slice the 'steaks' against the grain of the mushroom fibers and sprinkle with a touch of flaky sea salt before serving.

πŸ’‘ Chef's Tips

Don't be afraid to press hard; the goal is to remove the air and water to create a dense, meat-like texture. If the mushrooms are very thick, you can slice them into 1-inch thick 'slabs' before searing instead of cooking them whole. Use a cast-iron pan if possible; the heat retention is essential for getting that deep, crusty Maillard reaction. If the pan gets too dry during the pressing phase, add a teaspoon of oil to prevent sticking. Always use fresh herbs for the basting phaseβ€”dried herbs will burn and become bitter in the hot butter.

🍽️ Serving Suggestions

Serve alongside creamy garlic mashed potatoes and charred asparagus for a classic steakhouse feel. Pair with a bold, tannic Red Wine like a Cabernet Sauvignon or a Malbec to complement the earthy umami. Top with a dollop of vegan horseradish cream or a chimichurri sauce for an extra kick of flavor. Place atop a bed of truffled polenta for an ultra-luxurious fine-dining presentation. A side of balsamic-glazed Cipollini onions adds a lovely sweetness that balances the savory mushroom.