Preheat oven to 400 degrees F. Place potatoes in a pot and cover with water. Bring to a simmer and cook until potatoes are tender, approximately 15 - 20 minutes. Heat milk and butter in a small saucepan. Keep warm. Drain cooked potatoes well.
2.
Press through a mill or ricer, place in mixer bowl. Add milk / butter mixture, egg yolks and nutmeg. Season with salt and pepper. Mix until well incorporated. Place cooked potato slices on a lightly oiled baking sheet.
3.
Transfer potato mixture to a pastry bag with a large star tip. Pipe potato mixture onto potato slices. Bake Duchesse Potatoes at 400 degrees F until golden brown (about 15 minutes) Transfer to a warm serving plates or a platter. Serve with roasted or grilled meats.
