July 6, 2026 · 5 min

Crispy Cajun Tilapia Sandwiches with Lime Slaw and Potato Wedges

Side Dish5 min1912 cal / serving

Get ready for a flavor-packed fish sandwich that rivals any takeout. Mild tilapia fillets are dipped in a Cajun-spiced tempura batter and fried until light and crispy. They’re nestled in toasted baguettes with a zesty lime mayo and crunchy cabbage slaw, with golden potato wedges on the side.

This recipe comes together in about 30 minutes, making it perfect for a quick weeknight dinner that feels special. The combination of spicy, tangy and crunchy textures will have everyone reaching for seconds.


Recipe details

Side Dish5 min1912 cal / serving2 servings

Nutrition per serving

Calories1912 kcalProtein36.4 gFat150.3 gCarbs107.5 gSugar66.2 gFiber3.2 gSodium2478 mg

Dietary labels

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

Allergen check

Gluten / wheat: containsMilk / dairy: containsEgg: containsFish: containsShellfish: not detectedPeanut: not detectedTree nuts: not detectedSoy: containsSesame: not detectedMustard: not detectedCelery: 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

Potatoesounce PotatoesView ingredient guide
Asparagus6 ounce AsparagusView ingredient guide
Tilapia11 ounce TilapiaView ingredient guide
Mayonnaise6 tablespoon MayonnaiseView ingredient guide
Tempura Batter Mix82 g Tempura Batter MixView ingredient guide
Lime1 unit LimeView ingredient guide
Coleslaw Mix4 ounce Coleslaw MixView ingredient guide
Demi-Baguette2 unit Demi-BaguetteView ingredient guide
Salt2 teaspoon (tsp) SaltView ingredient guide
Sugar1 teaspoon (tsp) SugarView ingredient guide
Cooking Oil2 teaspoon (tsp) Cooking OilView ingredient guide
Black Pepperteaspoon (tsp) Black PepperView ingredient guide

Instructions

  1. Preheat oven to 425°F (220°C). Wash and dry produce. Cut potatoes into ½-inch-thick wedges. Zest and halve the lime.
  2. Toss potato wedges on a foil-lined baking sheet with a large drizzle of oil, half the Cajun Spice Blend, salt and pepper. Roast on top rack until browned and tender, 20-25 minutes.
  3. Meanwhile, in a medium bowl, combine coleslaw mix, 1 teaspoon sugar (2 tsp for 4 servings), juice from half the lime, salt and pepper. In a small bowl, combine mayonnaise and lime zest to taste. Refrigerate slaw and lime mayo until ready to use.
  4. In a large bowl, whisk together tempura batter mix, remaining Cajun Spice Blend, ½ cup cold water and ½ teaspoon salt until smooth. (For 4 servings, use ⅔ cup water and 1 tsp salt.) If too thick, add more cold water 1 tablespoon at a time until it reaches a pancake-batter consistency. Pat tilapia dry with paper towels; season with salt and pepper. Add tilapia to batter and gently turn to coat evenly.
  5. Heat a ¼-inch layer of oil in a large heavy-bottomed pan over medium-high heat. When oil is hot (a drop of batter sizzles), add tilapia in a single layer, shaking off excess batter. Cook until golden brown and cooked through, 2-3 minutes per side. (For 4 servings, fry in batches, adding more oil as needed.) Transfer to a paper-towel-lined plate and season immediately with salt and pepper.
  6. While tilapia cooks, halve baguettes lengthwise and toast until golden.
  7. Spread cut sides of baguettes with lime mayo. Fill with tilapia and slaw. Serve sandwiches with potato wedges and any remaining lime mayo on the side.

Recipe Tips

For extra crispy fish, make sure the oil is hot enough before frying. Test with a drop of batter.

If the tempura batter becomes too thick, thin it with a little cold water until it coats the fish lightly.

You can substitute asparagus with green beans or broccoli if desired.

FAQ

Can I use a different fish for this recipe?

Yes, any mild white fish like cod or haddock works well. Adjust cooking time as needed.

How do I make the slaw ahead of time?

Prepare the slaw up to a day in advance and store it in the refrigerator. Add the lime juice just before serving to keep it crunchy.

Can I bake the fish instead of frying?

For a lighter version, place the battered fish on a greased baking sheet and bake at 425°F for 10-12 minutes, flipping halfway, until golden and cooked through.

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