1. Preheat oven to 350°F.
  2. To prepare the Balsamic Glaze, stir balsamic vinegar and sugar in a pan over low heat until the liquid is reduced and a thick consistency is reached. Set aside.
  3. Mix flour, yeast, salt and warm water in a bowl. Knead for 10 minutes. Leave dough to rest for 1 hour or until it rises.
  4. Roll out dough and place in a pan lined with baking paper. Sprinkle Gorgonzola cheese and add apple slices.
  5. Bake for 20 minutes. Remove from oven, drizzle with balsamic glaze and top with rocket leaves. Serve immediately.