Cut top 1/4 inch off head of garlic to expose tops of cloves. Place in small baking dish. Spoon oil over; sprinkle with salt and pepper. Cover dish tightly with aluminum foil. Bake until garlic cloves are tender, about 45 minutes. Squeeze garlic cloves from skins and mash in small bowl.
Meanwhile, cook potatoes in a large pot of boiling salted water until very tender, about 18 minutes. Drain; return to pot.
Add butter, roasted garlic, and mash together. Season to taste with salt and pepper. Stir in chives and serve.
Potatoes are a nice source of dietary fiber, as well as vitamin B6, potassium and vitamin C. Garlic has incredible anti-microbial properties and is fabulous for helping to fight off any illnesses. In my book, there’s no such thing as too much garlic.. especially when you’re making garlic mashed potatoes!