Heat the butter and 1 tbsp of the oil in a pan, add the mushrooms and pan-fry until golden, remove and set aside. Add the remaining oil to the pan and soften the shallots and garlic over a low heat for 5 minutes. Stir in the rice and toast for a couple of minutes until opaque, then add the wine and sizzle until absorbed.
Gradually add the hot stock to the pan, waiting until each ladleful has been absorbed by the rice before adding another. Wait till the rice is cooked.
Remove from the heat, stir in the cream and season well with salt and cracked black pepper. Fold through the mushrooms, blue cheese, and parsley and serve.