DIRECTIONS
Preheat oven to 425 degrees.
Line a sheet pan with parchment paper.
Place the fish fillets in pan and sprinkle generously with salt and pepper.
Combine and mayo and sour cream, 2 mustards, shallots, capers, 1 tsp. salt and ½ tsp. pepper in a small bowl.
Spoon the sauce evenly over the fish, making sure the fillets are completely covered.
Bake for 10 to 15 minutes, depending on the thickness of the fish.
Test the thickest part for doneness with a fork. Be sure not to overcook it.
Serve hot or at room temperature with the sauce from the pan spooned over the top.
Serves 4.