Kosher Mushroom ‘Crab’ Cakes with King Oyster Magic

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I started making these mushroom cakes after my friend Sarah served them at a dinner party last spring. She’d discovered that king oyster mushrooms, when shredded properly, have this amazing texture that’s surprisingly similar to crab meat. The trick is getting them just the right consistency and adding enough seasoning to create that oceanic flavor without any actual seafood.

The King Oyster Mushroom Secret

The secret lies in how you prepare the mushrooms. You want to use the stems of king oyster mushrooms because they’re meatier and hold together better than the caps. I shred them with a fork after roasting, which gives them those perfect flaky pieces. Then comes the flavor building. Old Bay seasoning is surprisingly kosher and gives that classic seafood taste. A bit of kelp powder (you can find it at health food stores) adds that briny ocean flavor that makes these cakes really convincing.

What makes these work so well is the binding technique. I use a combination of panko breadcrumbs and a beaten egg, plus just a touch of mayonnaise to keep everything moist. The mixture should hold together when you press it but not feel dense or heavy. I’ve learned that chilling the formed patties for at least 30 minutes before cooking is crucial. Otherwise they’ll fall apart in the pan.

Getting the Perfect Mushroom Cake Texture

These mushroom cakes are perfect for a dairy meal where you want something substantial but not heavy. I like to serve them over a simple green salad with lemon vinaigrette, or alongside roasted vegetables. They also make excellent appetizers when formed into smaller portions. The flavor is sophisticated enough for company but easy enough for a weeknight dinner when you want something different.

Kosher Mushroom 'Crab' Cakes with King Oyster Magic - American recipe
I started making these mushroom cakes after my friend Sarah served them at a dinner party last spring. She'd discovered that king oyster mushrooms, when shredded properly, have this amazing texture that's surprisingly similar to crab meat. The trick is getting them just the right consistency and adding enough seasoning to create that oceanic flavor without any actual seafood. The secret lies in how you prepare the mushrooms. You want to use the stems of king oyster mushrooms because they're meatier and hold together better than the caps. I shred them with a fork after roasting, which gives them those perfect flaky pieces. Then comes the flavor building. Old Bay seasoning is surprisingly kosher and gives that classic seafood taste. A bit of kelp powder (you can find it at health food stores) adds that briny ocean flavor that makes these cakes really convincing. What makes these work so well is the binding technique. I use a combination of panko breadcrumbs and a beaten egg, plus just a touch of mayonnaise to keep everything moist. The mixture should hold together when you press it but not feel dense or heavy. I've learned that chilling the formed patties for at least 30 minutes before cooking is crucial. Otherwise they'll fall apart in the pan. These mushroom cakes are perfect for a dairy meal where you want something substantial but not heavy. I like to serve them over a simple green salad with lemon vinaigrette, or alongside roasted vegetables. They also make excellent appetizers when formed into smaller portions. The flavor is sophisticated enough for company but easy enough for a weeknight dinner when you want something different.
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Prep Time 20 minutes
Cook Time 25 minutes
Total Time 1 hour 15 minutes
Servings: 4 servings
Course: Appetizer, Main Course
Cuisine: American
Calories: 245
Ingredients Method Notes

Ingredients
  

  • 1½ pounds king oyster mushrooms stems only, caps reserved for another use
  • ¾ cup panko breadcrumbs divided
  • 1 large egg beaten
  • 3 tablespoons mayonnaise
  • 2 tablespoons fresh chives finely chopped
  • 1 tablespoon fresh lemon juice
  • 2 teaspoons Old Bay seasoning
  • ½ teaspoon kelp powder optional but recommended
  • ¼ teaspoon smoked paprika
  • ¼ teaspoon garlic powder
  • ¼ teaspoon kosher salt or to taste
  • ⅛ teaspoon black pepper freshly ground
  • 3 tablespoons vegetable oil for frying

Method
 

  1. Preheat oven to 400°F. Trim and clean the king oyster mushroom stems, removing any tough bottom portions. Cut stems into 3-inch pieces and place on a baking sheet.
  2. Roast mushrooms for 15-18 minutes until they're tender and slightly golden. Remove from oven and let cool for 10 minutes.
  3. Using a fork, shred the roasted mushroom stems into flaky, crab-like pieces. You want irregular, chunky shreds rather than fine pieces.
  4. In a large bowl, combine the shredded mushrooms with ½ cup panko breadcrumbs, beaten egg, mayonnaise, chives, lemon juice, Old Bay seasoning, kelp powder (if using), smoked paprika, garlic powder, salt, and pepper.
  5. Mix gently until everything is well combined and the mixture holds together when pressed. If it seems too wet, add a bit more panko. If too dry, add another tablespoon of mayonnaise.
  6. Form the mixture into 8 small patties, about ½ cup each. Place on a plate and refrigerate for 30 minutes to firm up.
  7. Place remaining ¼ cup panko breadcrumbs on a plate. Gently coat each chilled patty with breadcrumbs, pressing lightly to adhere.
  8. Heat vegetable oil in a large skillet over medium-high heat. When oil shimmers, carefully add 4 patties to the pan, leaving space between each.
  9. Cook for 3-4 minutes until golden brown and crispy on the bottom. Flip carefully and cook another 3-4 minutes until second side is golden. Repeat with remaining patties.
  10. Serve immediately while hot and crispy.

Notes

Store leftover mushroom cakes in the refrigerator for up to 2 days. Reheat in a skillet over medium heat for best texture. The mixture can be prepared up to 1 day ahead and kept refrigerated before forming into patties. If you can't find kelp powder, add an extra pinch of salt and a squeeze of lemon for that oceanic flavor.
Nutrition Facts
4 servings per recipe
Serving size 1 serving
Calories 245
% Daily Value*
Total Fat 16g 21%
Saturated Fat 3g 15%
Trans Fat 0g
Cholesterol 47mg 16%
Sodium 485mg 21%
Dietary Fiber 3g 11%
Total Sugars 4g
Protein 8g 16%
*Percent Daily Values are based on a 2,000 calorie diet.
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