IMHO, silicone muffins cups insulate the batter too much for steam baking. This is untested. I do use them at home in my microwave where the silicone won't matter. I have baked 4 muffins at a time in a "grease pot" over alcohol stoves. I fit perforated disposable pie tin into my pot and set disposable foil muffin liners onto the pie tin. Baking with steam means the batter can be a little drier than dry baking since there will be no evaporation and the muffins won't brown. I haven't tried this with a canister stove and generally don't bake on the trail. I might with a wood fire, but I don't want to carry the extra fuel for most of what I do. I did steam muffins and poach eggs with this set up when car camping with hubby when we flew to National Parks. If you can get the flame really low, you may be able to use a canister stove, but the fuel is more expensive than I want to use for experiments.