Preheat an oven to 220C/200C fan forced. Grease a large roasting pan.
Process Chicken Crimpy biscuits in a small food processor to fine crumbs.
Place potato slices in a bowl. Drizzle with the oil and butter. Scatter over processed biscuits. Toss to coat.
Transfer potatoes to prepared tray (in a single layer). Roast for 45-50 minutes or until crispy.
Serve with sour cream.
