Baked flounder with spinach and onions

Description

This recipe won't take much time. Melt 2 tablespoons of butter in a skillet. Add onion and sauté until translucent. Add chopped spinach, oregano, 1/4 teaspoon salt, and 1/8 teaspoon pepper. Place about 1 1/2 tablespoons of the spinach mixture onto each flounder fillet and roll up. Place the fish seam-side down in a baking dish. Add wine. Cover and bake for 25 minutes at 170 degrees. Drain the liquid and set aside 1/2 cup. Keep the fish warm. Melt the remaining 3 tablespoons of butter in a saucepan. Add flour, salt, pepper, and mustard. Stir in the reserved liquid and milk. Cook until thickened. Pour the sauce over the flounder. Sprinkle with Parmesan cheese, paprika, and serve hot.

Instructions