3 lbs. tenderloin
Flour
Salt
Pepper
Garlic salt
4 tbsp. butter
1 tsp. onion salt

SAUCE:

2 tbsp. butter
8 oz. fresh mushrooms, sliced
1/2 c. dry sherry

Roll tenderloin in flour, salt, pepper and garlic salt. Bake at 500 degrees for 8 minutes, basting with 4 tablespoons butter and 1 teaspoon onion salt. For the sauce, melt 2 tablespoons butter, and add mushrooms and dry sherry. Pour over meat and cook 15 minutes more at 500 degrees.