Heat a large nonstick skillet over medium heat. Coat pan with cooking spray. Add green onions to pan, and cook 2 minutes or until tender, stirring occasionally. Remove from heat.
Place mashed potatoes in a medium bowl. Stir in onions, cheese, flour, salt, egg, pepper, and bacon. Divide potato mixture into 6 equal portions, shaping each into a 1/2 inch thick patty. Place breadcrumbs in a shallow dish. Dredge patties in breadcrumbs.