1. Heat olive oil in a large skillet over medium heat. Stir together the mashed potatoes and smoked cheddar then scoop about ¼ Cup mashed potatoes and form into equal size small patties. Combine parmesan cheese and flour into a shallow dish and press potato patties into mixture. In batches, place patties into hot skillet and cook for 2-4 minutes per side or until golden brown. Transfer to a paper towel lined plate. Serve warm with ranch dressing if desired.