I've been back country camping for over 20 years. Why am I only just now learning about steam bake?
The basic idea is rather than a dry oven, you bake with the 210º heat of steam. You simply create a steam oven by placing some water in your cook pot, then place the bake inside another container (something that will lift it off the very bottom of your pot... I've seen where some people simply insert a few stones in the bottom of their pot), cover and let water boil for about 15 to 20 minutes.
Today at home, I tried "Bisquik Complete" butter milk biscuits (it's a 'just add water' mix). Mixed 1/4 the packet (53g) with the correct amount of water (30ml) inside a coke can (lid cut off, and covered the opening with aluminum foil to keep liquids out of the can). Let water boil about 15 to 20 minutes, and the result was a large biscuit with a similar consistency of the inside of a slightly undercooked biscuit from Cracker Barrel.
Obviously just a baking method does not brown the outside of the biscuit. But I loved the results and HAVE to try this for my next back country adventure. If you like a toasty outside, some recommend stabbing the result with a stick and hold it over a fire.