|1 lb. dorado, or other firm white fish,filleted||1/2 cup mayonnaise|
|1 small tin sliced mushrooms, drained, or fresh mushrooms if possible||2 tblsp grainy Dijon mustard|
|1 medium onion, chopped||1 tblsp dry sherry|
|1 clove garlic,crushed||Dash of Tabasco sauce|
Heat a knob of butter in a small pan, and gently fry the onion until soft. Take off the heat, and add all the other ingredients apart from the fish. Mix well. Lay the fish fillets in a baking dish, and pour the creamy sauce over. Cover the dish with tinfoil, and bake in a medium oven for 20 minutes.
Serve with mashed potatoes and a green vegetable, such as sugar snap peas.