Vegan Oyster Mushroom Po’ boy

I created this sandwich as an ode to my favourite show, Diners, Drive In’s & Dives. It’s a traditional po’ boy sandwich made with deep fried oyster mushrooms and a simple sweet and tangy remoulade AKA mayo sauce.

Guy Fieri would be proud and probably wouldn’t be able to tell this was vegan. Why? Because oyster mushrooms are magical!

The biggest and most tasty vegan challenge ever is going down this week! May I present the vegan sandwich challenge to y’all.

There’s nothing more perfect then biting into an awesome sandwich. Watch the competition below or keep scrolling for the full recipe and instructions to make this vegan oyster mushroom po’boy.

Nutrition Facts

  • Servings 4
  • Amount per serving Calories
  • 726 Total Fat
  • 43.9g Saturated Fat
  • 18.4g Cholesterol
  • 0mg Sodium
  • 620mg Total Carbohydrate
  • 61.7g Dietary Fiber
  • 10.6g Total Sugars
  • 3.6g Protein
  • 22.2g Vitamin D
  • 0mcg Calcium
  • 46mg Iron
  • 10mg Potassium
  • 307mg

Recipe Allergies


  • 1.Mix together ground flax and water and set it aside to thicken for 10 minutes.
  • 2.Mix together nondairy milk, apple cider vinegar, vegan oyster sauce, garlic powder, basil, and white pepper. Add the flax mixture once thickened, and then pour the marinade over the pieces of oyster mushrooms in a large zipper bag ensuring they are well submerged. Refrigerate for 15 to 20 minutes.
  • 3.Meanwhile, mix together the breading ingredients and set aside.
  • 4.You can combine the sandwich sauce ingredients together in a small dish in advance, or while the mushrooms are marinating and leave in the fridge until ready to assemble.
  • 5.Heat oil to 365°F in a large iron skillet or heavy flat bottomed pan, or do this in a deep fryer because the mushrooms will splash oil with all their moisture! Oil should be heated up to the right temperature just as you’re about to bread the oyster mushrooms.
  • 6.Remove a few oyster mushroom pieces from the marinade and place directly in the breading coating evenly on all sides using your hands. Place each piece into the hot oil and fry for 2 to 3 minutes, flipping half way through.
  • 7.Using a pair of tongs, place the fried pieces onto paper towel to absorb excess oil. Continue to bread the oyster mushrooms and fry in small batches.
  • 8.To prepare the sandwiches, cut rolls in half and toast lightly if desired. Spread the remoulade on either side. Layer romaine lettuce, tomato slices, pickles, then fried oyster mushrooms. Serve immediately while the oyster mushrooms are still warm and enjoy!

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  • 1/2 lbs oyster mushrooms (approximately 16 to 20 pieces)
  • 2 tbsp ground flax
  • 6 tbsp water
  • 1 C unsweetened nondairy milk
  • 1/4 C apple cider vinegar
  • 2 tbsp vegan oyster sauce (or vegan worcestershire sauce)
  • 2 tsp garlic powder
  • 2 tsp dried basil
  • 1 tsp white pepper
  • 1 1/2 to 2 C vegetable oil, for frying


  • 1/2 C panko bread crumbs
  • 1/4 C corn meal
  • 1/4 C all-purpose flour
  • 1 tsp sea salt
  • 1 tsp cayenne
  • 1 tsp garlic powder
  • 1 tsp dried basil
  • 1/2 tsp smoked paprika
  • 1/2 tsp ground black pepper