Preheat oven to 425°.
Lightly spoon flour into a dry measuring cup; level with a knife. Combine flour and potato in a large bowl; toss well.
Melt butter in a small saucepan over low heat. Add sugar and next 7 ingredients (sugar through pepper); cook 4 minutes or until sugar dissolves. Pour over potato mixture; toss well. Spoon mixture into a shallow 2-quart casserole dish coated with cooking spray.
Cover and bake at 425° for 55 minutes or until tender. Let stand 10 minutes.