I've made biscuits on a backpacking stove, miles from civilization. At home, whisk a little salt, baking powder, and powdered milk into the flour, and cut in the butter and/or shortening. Pack it in a ziploc bag, and it will be fine in your pack. Biscuits are best when made with cold fat of course, so make the biscuits on a chilly morning or cold night. Add cold water straight into the ziploc and knead until barely mixed. I use a very lightweight aluminum skillet with a lid (an aluminum pie plate will do for a lid). Add a little oil to the pan and use a low flame on your stove. Cut the corner from the ziploc & squeeze biscuits into the pan. Cover and "bake" over the low heat for about 10 minutes, flipping the biscuits after about five minutes.
If you're car camping, biscuits in the dutch oven are easy. Biscuits and gravy are a staple for breakfast on our annual family reunion camping trip.