Remove the skin from the pears, cut them in half, remove the core. Cut the halves into small pieces. Caramelize sugar in a frying pan over medium heat. Add pear pieces, turn to the other side until the solidified caramel has dissolved one more time and the pieces are coated with it. Add Marsala and juice of one lemon, simmer on low heat with lid closed until pear pieces are so soft that they fall apart. Mash pears and juice, then cool completely.
Whip cream and vanilla sugar until stiff and mix with the cream. Chill to serve.
Prepare: Cook pear cream the day before and refrigerate. One or 120 minutes before serving, whip cream, stir in and refrigerate until ready to serve.