Preheat oven to 400F
Place the garlic on a baking tray and bake for 15 minutes until softened. Allow to cool n little. Then peel away the skins. Spray chopping knife with cooking spray and chop the carlic until smooth.
Meanwhile cook the potatoes in lightly salted water for about 15 minutes or until tender. Set aside.
Melt 1/2 stick butter in frying pan. add the onion and cook until soft and lightly brown.
While the potatoes is still hot, mash it with 1/2 stick butter and cream, using a potato masher. Add the garlic and 1/2 of the chopped parsley. Season with salt and pepper.