Unroll the pastry and cut the edges if it is a round sheet. Put the 2 slices of ham and sprinkle with grated cheese.
Quickly cook the filet mignon on all its sides.
Put it on the pastry sheet and roll it well.
If you have pastry leftovers, use it to make stripes to decorate. Brush with egg yolk.
Bake 35 minutes at 360°F (180°C).
There you are !