Poisson a la Provencale

Poisson a la Provencale is southern French cooking at its most aromatic. Fish fillets get browned in butter, flambeed with warm cognac, then baked in a smooth, sieved Provencal sauce of tomatoes, onions, garlic, mushrooms, fennel, and bay leaf. Sliced sauteed mushrooms garnish the top.

The sauce is key, and it’s done right. The vegetables simmer together gently for 10 minutes, then get passed through a sieve or food mill, not a food processor. The sieve gives you a velvety, refined sauce without the frothy texture a blender creates. A dash of hot sauce at the end adds just enough background heat to keep things interesting.

The cognac flambe is optional but spectacular. Warming the cognac before pouring it over the browned fish lets it ignite cleanly, burning off the alcohol and leaving behind a warm, brandy-scented depth in the pan drippings.

Pro Tips

• Use a food mill or sieve for the sauce, not a food processor. The difference in texture is significant. A sieve produces a smooth, elegant sauce that clings to the fish.
• Warm the cognac before flambeing. Cold cognac won’t ignite. Pour it over the fish and tilt the pan toward the flame, or light with a long match.
• Brown the fish in butter over high heat for just a minute or two per side. The fish finishes cooking in the oven, so don’t worry about cooking it through on the stovetop.
• The sauce can be made ahead and refrigerated, making this a great dinner party dish. Reheat gently before pouring over the fish.

Variations

• Olive addition: Stir a handful of sliced Nicoise olives into the finished sauce for a more traditional Provencal profile.
• White wine version: Replace the cognac with a splash of dry white wine for a lighter, less dramatic approach.
• Shrimp Provencale: Use large shrimp instead of fish fillets. Reduce the baking time to 8 to 10 minutes.