Dessert pizza with marshmallows, chocolate and raspberries

Method
Prep:30min  ›  Cook:15min  ›  Extra time:2hr  ›  Ready in:2hr45min 

1. Dissolve the yeast in a bowl with half of the milk. Let stand until bubbly.
2. Place flour, sugar, vanilla and oil in the bowl of a food mixer. Attach the dough hook; add the yeast and start mixing, adding the remaining warm milk in a thin stream. Mix for 5 to 7 minutes to make a soft and smooth dough. When ready, the dough will wrap around the hook.
3. Remove from the bowl, quickly stretch the dough and shape into a ball, then place back in the bowl. Cover with cling film and place in the cold oven with the light on. Let rise for 1 hour. Gently punch down the dough and let rise for 1 hour longer.
4. Preheat the oven to 250 C / Gas 9. Line a 23X33cm baking tray with parchment and sprinkle with some cornflour.
5. Roll the dough out into a large rectangle; transfer onto the baking tray. Spread the mascarpone evenly on the dough and scatter the marshmallows on top.
6. Bake in the preheated oven for 7 minutes. Remove from the oven, scatter chocolate chips on top and then bake for 7 to 8 minutes.
7. Remove from the oven and allow to cool. Top with fresh raspberries and mint leaves. Cut into squares and serve.