[header] How to bake a cake inside a hollowed orange over a campfire [title] Wash and cut the oranges. [step] Rinse the whole oranges under running water. Use a vegetable brush to scrub the skins and remove any dirt or particles. 
Pat the oranges dry, and then use a sharp knife to cut the top quarters off each orange. [substeps] Depending on the size of the oranges, you may be cutting off the top 1 to 2 inches (2.5 to 5 cm) of each orange.