Amazing "Make Beforehand" Mashed Potatoes

Boil potatoes with salt and garlic, drain, add butter & cream cheese. Let the butter & cheese melt a bit before whipping with electric beaters until fluffy, adding as much milk as needed to make them fluffy. Blend in chives at the very end so they don’t get all chopped up by the beaters. Place in a casserole dish in oven at 325 degrees until heated through. Whip with a wire whip or slotted spoon until fluffy. Serve.