Pre-roast beef tenderloin at 425 to desired doneness
Baste with 2 oz melted butter and 1/2 cup Madeira during roasting
Let Cool to room temperature
Cook mushrooms and onions in butter until all moisture has cooked away.
Cool to room temperature.
Heat consommé and butter. Dissolve cornstarch in Madeira and add to consommé. Stir over low heat until thickened.
Thaw and roll to 18x18 or large enough to enclose tenderloin.
Lay beef along one edge of pastry. Cover with mushroom stuffing.
Lift pastry up over beef, overlapping is under meat and sealing edges. Brush edges with beaten egg to seal. Carefully on baking sheet sealed edge done.
Cut decorative shapes from pastry trimmings and arrange down center of pastry. Brush all over with beaten egg.
Bake at 425 30 minutes
Slice and serve with Madeira Sauce.
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