July 23, 2026 · 10 min

Crispy Old Bay Mushroom Po’ Boys with Corn on the Cob and Boardwalk Fries

Dinner10 min1948 cal / serving

These mushroom po’ boys are an embarrassment of riches. Crispy tempura-battered mushrooms seasoned with Old Bay are piled high on toasted baguettes, then topped with a creamy, tangy slaw, dill pickles and a zippy remoulade sauce. It’s a flavor-packed sandwich that transports you straight to New Orleans.

On the side, sweet corn on the cob and Old Bay-seasoned fries round out the meal. This veggie-forward dinner is hearty, satisfying and full of bold flavors. Perfect for a summer night or anytime you’re craving something fun and delicious.

Recipe details

Dinner10 min1948 cal / serving2 servings

Nutrition per serving

Calories1948 kcalProtein11.6 gFat147.7 gCarbs144.4 gSugar76.9 gFiber5.9 gSodium2427 mg

Dietary labels

Gluten-free: noLactose-free: noDairy-free: no

Allergen check

Gluten / wheat: containsMilk / dairy: containsEgg: containsFish: not detectedShellfish: not detectedPeanut: not detectedTree nuts: not detectedSoy: containsSesame: not detectedMustard: containsCelery: not detectedSulphites: not detectedLupin: not detectedMolluscs: not detected

Values are calculated per serving from ingredient amounts and the ingredient nutrition reference per 100g. Allergen and diet labels use available ingredient metadata and name matching; always check product labels for strict diets or allergies. Some ingredient amounts or nutrition values were incomplete, so this is marked as a partial estimate.

Ingredients

Sour Cream3 tablespoon Sour CreamView ingredient guide
Sliced Dill Pickle1 unit Sliced Dill PickleView ingredient guide
Potatoes12 ounce PotatoesView ingredient guide
Button Mushrooms4 ounce Button MushroomsView ingredient guide
Lemon1 unit LemonView ingredient guide
Mayonnaise4 tablespoon MayonnaiseView ingredient guide
Tempura Batter Mix82 g Tempura Batter MixView ingredient guide
Corn on the Cob1 unit Corn on the CobView ingredient guide
Shredded Red Cabbage4 ounce Shredded Red CabbageView ingredient guide
Scallions2 unit ScallionsView ingredient guide
Dijon Mustard4 teaspoon Dijon MustardView ingredient guide
Garlic Powder1 teaspoon Garlic PowderView ingredient guide
Demi-Baguette2 unit Demi-BaguetteView ingredient guide
Hot Sauce1 teaspoon Hot SauceView ingredient guide
Sugar1 teaspoon (tsp) SugarView ingredient guide
Saltteaspoon (tsp) SaltView ingredient guide
Black Pepperteaspoon (tsp) Black PepperView ingredient guide

Instructions

  1. Adjust rack to top position and preheat oven to 425°F. Wash and dry produce. Cut potatoes into ½-inch-thick wedges. Trim and thinly slice scallions, separating whites from greens; roughly chop whites. Quarter lemon. Trim and halve mushrooms (quarter any larger mushrooms).
  2. Toss potatoes on a baking sheet with a large drizzle of oil, half the Old Bay seasoning, salt and pepper. Roast on top rack, flipping halfway, until browned and tender, 20-25 minutes.
  3. In a medium bowl, combine cabbage, scallion greens, sour cream, 1 teaspoon sugar and juice from one lemon wedge. Season with salt and pepper. Set aside.
  4. In a second medium bowl, combine mayonnaise, mustard, scallion whites, juice from one lemon wedge and hot sauce to taste. Set aside.
  5. In a third medium bowl, whisk together tempura batter mix, garlic powder, remaining Old Bay seasoning, ⅓ cup cold water and a big pinch of salt. If too thick, add more water 1 tablespoon at a time until it reaches a pancake-batter consistency. Stir mushrooms into batter until fully coated.
  6. Heat a ⅓-inch layer of oil in a large pan over medium-high heat. Once hot, use tongs to add coated mushrooms in a single layer (work in batches if needed). Cook until golden brown, 3-4 minutes per side. Transfer to a paper-towel-lined plate and season with salt.
  7. While mushrooms cook, halve baguettes lengthwise, stopping before cutting all the way through. Toast cut sides up directly on oven rack or on a baking sheet until golden, 3-5 minutes.
  8. Wrap corn in damp paper towels and microwave until kernels are softened, 3-4 minutes. Let rest 1 minute, then halve crosswise.
  9. Spread cut sides of baguettes with remoulade. Fill with mushrooms, pickle slices and as much slaw as desired. Divide sandwiches, corn and fries between plates. Serve with remaining slaw, remoulade and lemon wedges.

Recipe Tips

For extra crispy fries, soak potato wedges in cold water for 30 minutes before roasting, then pat dry.

If the tempura batter is too thick, add cold water 1 tablespoon at a time until it reaches a pancake-batter consistency.

Work in batches when frying mushrooms to avoid overcrowding the pan, which can make them soggy.

If you have malt vinegar or ketchup, serve it alongside the fries for an authentic boardwalk touch.

FAQ

Can I use a different type of mushroom?

Yes, cremini or oyster mushrooms work well. Just make sure they are similar in size so they cook evenly.

Can I make this recipe gluten-free?

Use a gluten-free tempura batter mix and ensure your baguettes are gluten-free. The rest of the ingredients are naturally gluten-free.

How do I reheat leftovers?

Reheat fries and mushrooms in a 400°F oven for 5-7 minutes to restore crispiness. The sandwich components can be assembled fresh.

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