Baked Flounder with Tomato Caper Sauce

Preparation

1. Step 1

   Preheat oven to 425°F.

2. Make sauce:

   Step 2

   Heat oil in a 12-inch heavy skillet over moderately high heat until hot but not smoking, then sauté onion and fennel, stirring, until golden, about 8 minutes. Add garlic and sauté, stirring, 30 seconds. Add tomatoes and wine and simmer briskly until liquid is reduced by one third, about 5 minutes. Stir in capers, salt, and pepper, then transfer to a 2-quart gratin dish or other wide shallow baking dish.

3. Prepare flounder:

   Step 3

   Stir together bread crumbs, butter, salt, and pepper with a fork until combined. Season flounder with salt and pepper, then roll each fillet, skinned side up, into a cylinder and arrange, seam side down, on top of sauce. Gently press bread crumbs onto flounder.

   Step 4

   Drizzle wine carefully around fish into sauce (not over fish) and bake in middle of oven until fish is just cooked through, 20 to 25 minutes.