Preheat your oven to 400F and place radishes on a baking tray. Drizzle with olive oil and season with salt. Once oven is heated, roast for about 30 minutes, until golden brown and caramelized.
In the meantime, in a medium saucepan, heat olive oil and diced garlic over low heat. Saute the rice for 5 minutes and splash in the wine. Slowly stir and add the stock, while cooking for about 25 minutes. If needed, add more stock.
Finish with cream, cheese, and peas. Serve topped with fresh arugula and roasted radishes.