01 -
Preheat oven to 400°F.
02 -
Season and sear beef on all sides.
03 -
Cool beef, then coat with mustard.
04 -
Process mushrooms and cook them until dry.
05 -
Layer ham and mushrooms, then wrap beef within.
06 -
Chill the wrapped beef for 20 minutes.
07 -
Wrap the beef in puff pastry and seal with egg wash.
08 -
Score the puff pastry and sprinkle with flaky salt.
09 -
Bake for 25-35 minutes until golden brown.