Cajun Sweet Potatoes

3 lbs. sweet potatoes, peeled and cut in cubes 2 T. olive oil 3 T. brown sugar 1 t. cajun seasoning 1/2 t. salt 1/8 to 1/4 t. cayenne pepper
In a large bowl toss sweet potatoes with olive oil.Place potatoes in a single layer on a 15x10 inch pan, that has been sprayed with cooking spray. Bake at 450 for 20 minutes. Combine remaining ingredients sprinkle over potatoes. Bake 5 minutes longer or until tender.