Crab Stuffed Flounder with Buttery Cracker Topping
Crab stuffed flounder is a restaurant-worthy dinner that comes together surprisingly fast on a weeknight. The flounder fillets are tender and mild, and they roll around a rich crab filling with just enough crunch from the buttery cracker topping.
It bakes in one dish, looks impressive on the plate, and tastes like you fussed for hours. That’s my kind of cooking.
Why This Stuffed Flounder Always Impresses
I keep this recipe in my back pocket for nights when I want to feel a little fancy without much work. The flounder itself is delicate and flakes apart with a fork, but the crab filling gives each bite a savory, Old Bay seasoned richness that feels special.
The cracker topping is what makes it. Buttery Ritz crumbs toast up golden and add a crisp contrast to the soft fish and crab. It’s the same satisfaction as a crab cake, but with flounder doing all the heavy lifting for presentation.
Ingredients
- 4 (6-oz) flounder fillets: look for fillets that are evenly sized so they roll up neatly
- 8 oz lump crabmeat: pick through carefully to remove any bits of shell
- ½ cup crushed Ritz crackers (about 10 crackers): crush them into uneven crumbs, not a fine powder
- ¼ cup mayonnaise: full-fat keeps the filling creamy
- 1 tbsp Dijon mustard: adds a subtle tang without overpowering the crab
- 1 tsp Old Bay seasoning: the classic choice for crab
- 1 tbsp fresh lemon juice: brightens the whole filling
- 2 tbsp finely chopped fresh parsley: use flat-leaf for the best flavor
- ¼ tsp salt: a light hand is all you need since the crackers and Old Bay already have salt
- ¼ tsp black pepper: freshly ground if you have it
- 3 tbsp unsalted butter, melted: for the crumb topping
- Lemon wedges: for serving
Variations / Substitutions
- Swap the flounder for tilapia: tilapia fillets are usually a little thicker, so add 2-3 minutes to the bake time.
- Use saltines instead of Ritz: the topping will be less buttery and a bit crisper. Crush them the same way.
- Add a little heat: stir ¼ tsp cayenne or a few dashes of hot sauce into the crab filling.
- Try a different herb: chives or tarragon work nicely in place of parsley.
- For a simpler prep with no rolling, try my Lemon Butter Baked Flounder.
How to Make Crab Stuffed Flounder
Step 1: Mix the Crab Filling
In a medium bowl, combine the 8 oz crabmeat, ¼ cup mayonnaise, 1 tbsp Dijon mustard, 1 tsp Old Bay, 1 tbsp lemon juice, 2 tbsp chopped parsley, and the ¼ tsp each salt and pepper. Stir gently with a fork until everything is evenly mixed without breaking up the crab lumps too much.
The filling should hold together loosely when squeezed. If it feels wet, a spoonful of extra crushed crackers will tighten it right up.
Step 2: Roll the Flounder Fillets
Lay the 4 flounder fillets on a clean cutting board with the side that had the skin facing up. Spoon about 2 to 3 tablespoons of the crab mixture onto the wider end of each fillet. Starting from that end, roll each one up snugly, tucking the filling inside as you go.
Flounder is thin and the rolls will look petite, but that’s exactly what makes them cook evenly. Set them seam side down in a baking dish just large enough to hold them without crowding.
Step 3: Add the Cracker Topping
In a small bowl, toss the ½ cup crushed Ritz crackers with the 3 tbsp melted butter until every crumb looks damp. Sprinkle the buttery crumbs over the tops of the rolled fillets, pressing lightly so they stick.
You want a visible mound of crumbs on each roll. That layer turns into a golden, crunchy cap after baking and broiling.
Step 4: Bake Until Flaky
Heat your oven to 375°F (190°C). Slide the baking dish onto the middle rack and bake for 20 to 25 minutes. After about 20 minutes, peek in; the fish should appear opaque and the filling should be bubbling around the edges.
The exact time depends on how thick your rolls ended up. If you catch a faintly sweet, buttery crab scent filling the kitchen, you’re close.
Step 5: Broil and Serve
Switch the oven to broil and move the dish to the upper rack. Broil for 2 to 3 minutes, watching carefully, until the cracker topping is deeply golden and crackling. Pull the dish out and serve right away with lemon wedges alongside.
A quick squeeze of lemon right before you dig in cuts through the richness and makes the crab flavor pop. The topping stays crispiest the moment it leaves the oven, so call everyone to the table early.
Tips for the Best Stuffed Flounder
- Choose flounder over sole if you can. Flounder has a slightly firmer texture that holds the roll shape better during baking.
- Don’t overstuff. About 2 to 3 tablespoons of filling per fillet keeps the rolls secure without bursting open.
- If a roll stubbornly wants to unroll, poke a toothpick through the seam to hold it. Just remember to remove it before serving.
- For an extra punch of lemon, grate ½ teaspoon of zest into the cracker crumb mixture before baking.
Bake times by fillet thickness:
| Fillet thickness | Bake time |
|---|---|
| ½ inch | 20-22 mins |
| ¾ inch | 22-25 mins |
| 1 inch | 25-28 mins |
Storing Leftovers
- Refrigerate: Cover any extra rolls tightly and keep them in the fridge for up to 2 days.
- Reheating: Warm gently in a 300°F oven for about 10 minutes. The cracker topping will lose some of its crunch, but the fish stays moist.
What to Serve With Crab Stuffed Flounder
Steamed jasmine rice with a handful of chopped fresh herbs soaks up the buttery juices without competing with the crab. Roasted asparagus spears, simply tossed with olive oil and salt, offer a clean, green contrast next to the rich filling.
Frequently Asked Questions
Can I use frozen flounder fillets?
Yes, just thaw them completely in the refrigerator overnight and pat them very dry with paper towels. Any extra moisture will make rolling messy.
Can I assemble these ahead of time?
You can stuff and roll the fillets up to 4 hours before baking. Cover the dish and refrigerate, then add the cracker topping and bake straight from the fridge when you are ready.
What if my crab filling seems too wet?
Lump crabmeat sometimes releases liquid. Squeeze it gently in a clean towel first. If the mixed filling still feels loose, stir in an extra tablespoon of crushed crackers to absorb the moisture.
How do I know the flounder is cooked through?
The fish will turn opaque white and flake easily when you press it with a fork. If you have an instant-read thermometer, 145°F (63°C) in the center of a roll is your number.
Crab Stuffed Flounder Recipe
Ingredients
Method
- Combine crabmeat, mayonnaise, Dijon, Old Bay, lemon juice, parsley, salt, and pepper. Fold gently with a fork.
- Lay fillets skin side up, spoon 2-3 tablespoons filling onto the wide end of each, and roll up snugly. Place seam side down in a baking dish.
- Toss crushed crackers with melted butter and sprinkle over the rolls, pressing lightly to adhere.
- Bake at 375°F (190°C) for 20-25 minutes until the fish is opaque and the filling bubbles.
- Broil for 2-3 minutes until the topping is deep golden, then serve immediately with lemon wedges.
Notes
