1. Bring the potatoes to a boil in a large pot of water. Simmer for 15 minutes then drain and set aside for 20 minutes to cool.
2. Sift the flours into a large bowl. Add the yeast, salt, sugar, nutmeg, and rosemary and stir together.
3. Mash the potatoes withthe olive oil, add to the flour mixture, and mix well. Gradually add warm water, stirring constantlly with a wooden spoon.
4. Once the mixture is well combined trasfer it onto a clean work surrface and knead for about 10 minutes. Place into a bowl, cover with a cloth, and leave in a warm place for 1 hour
5. Grease a 9x9 inch baking pan with oil. Place the dough into the baking pan and use your fingers to spread it out to fit the pan.
6. Tuck some ham and pear slices into the dough at regular intervals, then drizzle some olive oil over top. Cover the pan with a cloth and let sit to proof for another 30 minutes.
7. Preheat the oven to 390F(200C). Bake for 30 minutes, until golden brown. Let cool, sprinkle with cheese, and serve.