I am working on a gluten free, eggless cupcake recipe. I am fine with the gluten free and found a pretty darn good recipe (using one from Cake Central and includes a box mix with Rice flour and Xanthan in it already). However, I tried the egg substitute (applesauce, oil and baking powder). My cupcakes were phenomenal in taste, but before they were taken out of the oven, the centers caved slightly (and I mean slightly), but nonetheless, they caved. I am uncertain what caused that. Can anyone help me understand what needs to happen? (again, I added baking powder in the egg substitute).
My suggestion would be to research some vegan recipes. I understand that they use vinegar for leavening.
Also if you look at your local book store or Amazon, I believe there are cookbooks that have these kind of recipes out there -gluten free and egg free. I wish I could remember the name, but it escapes me.
I found a great eggless recipe right here on CC for a strawberry cake. http://cakecentral.com/recipes/15677/eggless-strawberry-cake, Although I didn't bake cupcakes; it turned out perfectly in a sheet cake pan (not caving at all; as a matter of fact, I had to trim a slight dome b/c that how I got to taste it!). But this recipe is not gluten free (it uses cake flour) - your rice flour should work in it though. I made it for a young boy who is allergic to eggs and his mother told me afterwards that she'd love to have my recipe...that's always the best compliment!