Can I use a different fish instead of grouper?

Yes! Grouper is amazing, but you can sub in: Mahi-mahi Halibut Cod Tilapia (budget-friendly)

Is this sandwich spicy?

Not by default — but it can be . Add Cajun seasoning Use spicy remoulade Try pepper jack cheese

What’s the best bread for a Grouper Reuben?

Classic rye or marbled rye is 🔑 for that signature Reuben flavor. Toasted sourdough or brioche also works if you’re feeling fancy. 🌀

Can I make this ahead of time?

Yes — with a catch . Assemble fresh for best texture, but you can: Cook the fish Toast the bread Store fillings separately

Is Grouper Reuben Sandwich gluten-free?

Not by default, but it can be! Use: Gluten-free rye or sandwich bread Gluten-free dressing and seasoning

Grouper Reuben Sandwich: 5 Irresistible Reasons to Try It ✅

Description

The Grouper Reuben Sandwich is a seafood twist on the deli classic — made with flaky grilled grouper, melted Swiss cheese, tangy sauerkraut, and creamy Thousand Island dressing, all grilled between slices of buttery rye bread. It’s rich, satisfying, and packed with bold coastal flavor — perfect for pescatarians or anyone craving a hearty fish sandwich that eats like a meal. 🐟🥪🔥

Ingredients

Scale

For the Grouper Fillets:

2 grouper fillets (6 oz each)
Salt & pepper to taste
1 tsp Cajun seasoning (optional)
1 tbsp olive oil
Juice of ½ lemon

For the Sandwich Assembly:

4 slices rye bread (marbled or seeded)
4 slices Swiss cheese
½ cup sauerkraut (drained well)
3–4 tbsp Thousand Island or remoulade
1 tbsp butter (for grilling)

Optional Toppings:

Pickle chips
Tomato slices
Coleslaw
Bacon strips

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Instructions

Season & Cook Grouper:

Pat fillets dry, season with salt, pepper, and Cajun spice. Heat oil in skillet and cook fillets 3–4 minutes per side until golden and flaky. Finish with lemon juice.

Toast the Bread:

Spread butter on one side of each slice of rye bread. Toast on a skillet until golden.

Assemble Sandwich:

On unbuttered side of bread: layer cheese, cooked grouper, sauerkraut, sauce, and another cheese slice. Top with second bread slice, buttered side out.

Grill & Melt:

Return to skillet and press gently. Grill 2–3 minutes per side until cheese melts and bread is crispy.

Serve:

Slice diagonally and serve hot with chips, coleslaw, or pickles.

Notes

Drain sauerkraut well to avoid soggy bread.
Reheat leftovers by rebuilding the sandwich fresh with reheated grouper.
Use fresh grouper for best results; frozen fish may be too watery.
Brioche, sourdough, or gluten-free bread are good alternatives.

Prep Time: 10 minutes
Cook Time: 15 minutes
Category: Lunch, Dinner
Method: Pan-grilled
Cuisine: American

Nutrition

Serving Size: 1 sandwich
Calories: 460 kcal
Sugar: 6g
Sodium: 680mg
Fat: 25g
Saturated Fat: 11g
Unsaturated Fat: 12g
Trans Fat: 0g
Carbohydrates: 32g
Fiber: 3g
Protein: 35g
Cholesterol: 75mg