Filet Of Beef In Phyllo Pastry With Madeira Sauce

• 2 shallots (whole)
• 750 gr beef fillet mignon (whole)
• 180 ml beef stock
• 110 gr melted butter
• 80 gr mushrooms (minced)
• 70 gr butter
• 60 ml madeira wine
• 12 gr flour
• 6 gr kitchen bouquet
• 1 package phyllo dough