Preheat oven to 250C/230C fan-forced.
Slice potatoes into 1cm-thick rounds. Place potato, in a single layer, on 2 large baking trays with sides (see notes). Top evenly with rosemary.
Place butter and oil in a small saucepan over medium-high heat. Cook, stirring occasionally, for 5 minutes or until butter is melted. Pour evenly over potato on trays. Turn potato to coat. Season well with salt and pepper. Roast for 15 minutes.
Turn potato. Roast for 20 minutes, turning potato and sprinkling with garlic halfway through cooking. Turn potato. Pour stock evenly over potato. Roast for a further 10 minutes or until potato has soaked up the stock. Sprinkle with parsley. Transfer to a serving plate. Serve.
Serving size: 8
Courtesy of taste.com.au