Step 1. Preheat oven to 200°C. Step 2. Boil potatoes for 10 minutes in a pan of salted water and then drain. Step 3. Pour a thin layer of oil on a baking tray and add the sliced onion, the rosemary, garlic and the salt and pepper. Step 4. Toss the potatoes in the onion and garlic and roast for 15 minutes. Step 5. Remove from the oven, crush potatoes and top with the spicy Gorgonzola. Return to oven for 3-5 minutes until the Gorgonzola has melted and is bubbling. Enjoy!