Vegetarian oyster mushroom po' boys are the meatless Cajun classic done right. Crispy Old Bay-panko oyster mushrooms pile into a sub roll with soy mayo, shredded lettuce, tomato, and hot sauce. Dinner lands in under twenty minutes.
A Taste of New Orleans, Reimagined!
Craving the bold, spicy, and satisfying crunch of a classic Louisiana Po’ Boy sandwich? You’ve come to the right place! We’re swapping out the seafood for the star of the show: glorious oyster mushrooms. Their wonderfully meaty texture and ability to soak up flavor make them the perfect stand-in. We coat them in a seasoned panko crust and fry them to golden perfection, then pile them high on a soft sub roll with all the classic fixings. This recipe is a game-changer, delivering that authentic NOLA experience, completely plant-based. Let’s get cooking!
Ingredients
• (Serves 2)
• 8 ounces / 225g (7.9 oz) oyster mushrooms, trimmed and cut into bite-sized pieces
• 3 tablespoons / 45ml (1.5 fl oz) extra-virgin olive oil, divided
• Salt and freshly ground black pepper, to taste
• ¾ cup / 75g (2.65 oz) panko (Japanese) bread crumbs
• ½ teaspoon / 2g (0.07 oz) Old Bay seasoning
• 2 (6-inch / 15cm) sub rolls
• 2 tablespoons / 30g (1.06 oz) soy mayonnaise
• 3 romaine lettuce leaves, cut crosswise into ¼-inch strips
• 1 large ripe tomato, sliced
• Tabasco or other hot sauce, to taste
Instructions
1. In a medium bowl, toss the oyster mushrooms with 1 tablespoon (15 ml / 0.5 fl oz) of the olive oil. Season generously with salt and pepper to taste.
2. Add the panko bread crumbs and Old Bay seasoning to the bowl. Toss gently until the mushrooms are evenly and thoroughly coated.
3. Heat the remaining 2 tablespoons (30 ml / 1 fl oz) of oil in a large skillet over medium heat. Once shimmering, carefully add the coated mushrooms in a single layer.
4. Cook for 5-7 minutes, turning occasionally, until the mushrooms are golden brown and crispy on all sides. Remove from the heat and set aside.
5. Split the sub rolls in half lengthwise. Spread the cut sides of both halves with the soy mayonnaise.
6. To assemble, line the bottom half of each roll with the shredded lettuce. Arrange the tomato slices on top, followed by the crispy oyster mushrooms.
7. Sprinkle with Tabasco to your desired level of heat. Place the top half of the rolls on, press gently, and serve immediately with extra hot sauce on the side.
Nutritional Information
• (Approximate values per serving)
• Calories: 485 kcal
• Protein: 14g
• Fat: 22g
• Carbohydrates: 58g
• Fiber: 6g
Pro Tips
• Don’t overcrowd the pan when cooking the mushrooms. Cook in batches if necessary to ensure they get perfectly crispy, not steamed.
• For a richer flavor, lightly toast the inside of the sub rolls in the skillet before spreading the mayonnaise.
• Create a quick remoulade sauce by mixing the mayonnaise with a dash of hot sauce, a squeeze of lemon juice, and a pinch of smoked paprika.
• Gently press the panko onto the oiled mushrooms with your hands to help the coating adhere better during cooking.
FAQ
Q: Is this vegetarian po boy a good source of protein
A: This sandwich provides a respectable 14g (0.49 oz) of protein per serving, primarily from the oyster mushrooms and the bread. For an even bigger protein boost, you could add a layer of smoked tofu or use a protein-enriched sub roll.
Q: Can I use a different mushroom instead of oyster mushrooms
A: Yes! While oyster mushrooms are perfect for their meaty, shreddable texture, you can achieve great results with other varieties. King oyster mushrooms sliced into rounds, large shiitake caps, or even lion’s mane mushrooms would be excellent substitutes.
Q: How can I make this mushroom po boy gluten-free
A: Making this recipe gluten-free is simple. Just swap the panko for gluten-free panko bread crumbs and serve everything on a certified gluten-free sub roll or bread. The other ingredients are naturally gluten-free.
Q: Can I make the crispy oyster mushrooms ahead of time
A: For the absolute best crispy texture, the mushrooms should be cooked and served immediately. If you have leftovers, store them in an airtight container in the refrigerator. To revive their crunch, reheat them in an air fryer or a hot oven for a few minutes before assembling your sandwich.
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Vegetarian Oyster Mushroom Po' Boy Sandwich
Ingredients
Method
- In a medium bowl, toss the oyster mushrooms with 1 tablespoon (15 ml / 0.5 fl oz) of the olive oil.
- Season generously with salt and pepper to taste.
- Add the panko bread crumbs and Old Bay seasoning to the bowl.
- Toss gently until the mushrooms are evenly and thoroughly coated.
- Heat the remaining 2 tablespoons (30 ml / 1 fl oz) of oil in a large skillet over medium heat.
- Once shimmering, carefully add the coated mushrooms in a single layer.
- Cook for 5-7 minutes, turning occasionally, until the mushrooms are golden brown and crispy on all sides.
- Remove from the heat and set aside.
- Split the sub rolls in half lengthwise.
- Spread the cut sides of both halves with the soy mayonnaise.
- To assemble, line the bottom half of each roll with the shredded lettuce.
- Arrange the tomato slices on top, followed by the crispy oyster mushrooms.
- Sprinkle with Tabasco to your desired level of heat.
- Place the top half of the rolls on, press gently, and serve immediately with extra hot sauce on the side.
- Don't overcrowd the pan when cooking the mushrooms.
- Cook in batches if necessary to ensure they get perfectly crispy, not steamed.
