According to YouTuber NorthSurvival, you can actually bake a cake in an orange.
View this video on YouTube
That's right, AN ORANGE!
Things you'll need: An orange, fire, axe, and pure badassery.
That's right, AN ORANGE!
NorthSurvival uses 3.4 oz. sugar, 1.6 oz. flour, 1 oz. cocoa, 1 egg, and 1 oz. olive oil or butter.
You can subscribe to NorthSurvival's YouTube channel here.