Preheat the oven to 400 degrees F.
Butter a shallow baking dish and set aside.
Dice the potatoes.
Place them in the buttered dish.
Combine the milk and cream in a bowl.
Add the flour, garlic, salt and pepper and whisk.
Pour over potatoes.
Cover with foil and bake for 30 minutes.
Remove the foil and bake for another 20-30 minutes.
Just before serving, sprinkle with cheese and bake for another 3-5 minutes or until cheese is melted and bubbly.
Sprinkle on the chives and serve immediately.
