1 beef tenderloin (two pounds)
2 tablespoons butter, softened
1/4 cup chopped green onion
3/4 cup dry sherry
2 tablespoons soy sauce
1 teaspoon Dijon mustard
Dash of freshly ground black pepper
Spread meat with all but about one teaspoon of the butter. Place on a rack in a roasting pan. Roast, uncovered, in a preheated 400 degree oven for twenty minutes.
While tenderloin roasts, cook onion in remaining butter in a small saucepan. Stir in sherry, soy sauce, mustard, and pepper. Heat and pour over meat. Roast 20-25 minutes longer, basting frequently. Serve remaining sauce with the meat.