Preparation Generously butter glass pie dish. Cook potatoes and garlic in medium pot of boiling salted water until potatoes are tender, about 15 minutes. Drain; let stand 5 minutes. Discard garlic. Arrange potatoes close together in prepared dish. Using wooden spoon, smash potatoes coarsely until they split open. Drizzle with oil; dot with butter. Sprinkle with salt and pepper. Preheat broiler. Broil potatoes until crisp and golden, watching closely to avoid burning, 8 to 10 minutes. Top with dollops of sour cream; sprinkle with chives.
Preparation Generously butter glass pie dish. Cook potatoes and garlic in medium pot of boiling salted water until potatoes are tender, about 15 minutes. Drain; let stand 5 minutes. Discard garlic. Arrange potatoes close together in prepared dish. Using wooden spoon, smash potatoes coarsely until they split open. Drizzle with oil; dot with butter. Sprinkle with salt and pepper. Preheat broiler. Broil potatoes until crisp and golden, watching closely to avoid burning, 8 to 10 minutes. Top with dollops of sour cream; sprinkle with chives.