Cook potato in boiling water to cover in a large saucepan 15 minutes or until tender; drain. Toss with butter and green onions in a bowl.
Whisk together whipping cream and flour in saucepan; stir in cheese. Cook over medium heat, stirring constantly, 3 minutes or until mixture is thickened. Stir in salt and pepper. Toss with potato mixture; sprinkle with bacon and parsley. Serve immediately.
