Sole is a flatfish with a flaky white meat and delicate flavor. It’s often sold in thin fillets that cook quickly. Baking sole is an easy way to create a healthy dinner. Mixing sole fillets with Worcestershire sauce gives the fish dish a rich color and taste. However, Worcestershire sauce has a strong flavor, so it’s important not to use too much or you’ll drown out the mellow fish taste. You can help dilute the strong flavor of the Worcestershire sauce by mixing it with melted butter, lemon juice and/or water.
Preheat the oven to 350 degrees Fahrenheit. Rinse the thawed fish and pat it dry with a paper towel.
Place the fillets in a shallow, nonstick baking dish. Check that no fillets are touching. Sprinkle the fish with Worcestershire sauce or the diluted mixture that includes lemon juice, melted butter and water. Alternatively, you can make a marinade by combining Worcestershire sauce with other ingredients like lemon juice, minced garlic and pepper in a blender. Blend for about 10 seconds. With the blender still going at a low speed, add olive oil in a slow steady stream. This creates a thick mixture. Pour the mixture over the fish and marinate for about an hour in the refrigerator before cooking.
Slide the dish onto the middle oven rack. Bake the fish for 5 minutes per every 1/2-inch of thickness. Check that the internal temperature of each fillet registers at 145 degrees F. Remove the fillets from oven and serve.