Candied Sweet Potatoes and Apples

5 or 6 Sweet potatoes, peeled and sliced
2 cooking apples, peeled, cored and sliced
1 and 1/4 cups sugar (I used Splenda)
1 tablespoon vanilla
1 stick butter, cut into small pieces
1 packet Wylie's Sweet Potato and Yam Seasoning

Place sweet potatoes and apples in large skillet. 

Cover with remaining ingredients. 

Heat on medium for a few minutes until butter begins to melt. 

Stir gently, cover and heat 15 or so minutes until the sweet potatoes and apples are tender.