1) Slice oranges in 1/4 inch even slices horizontally so you get a nice star pattern. This is easiest if your oranges are fresh, but if you’re using old ones because you don’t want to eat them.. its ok, it still works.
2) arrange on a cookie sheet at bake at 150 for approximately 4 hours. Flipping them half way through will help with even drying of the slices. Depending on your oven, the thickness of your slices, and the relative humidity of your house this may take more or less time. It took me about 6 hours to get my thicker slices dried out enough.
3) Tie a ribbon
4) And hang on a tree, or garland. I hung mine on my garland to spice it up some. The Oranges look SOO pretty with the twinkle lights on.