I found this by chance. It was supposed to be cooked in microwave, but since I don't believe in microwaves being safe, we bake it. And it works out great! YOU need to use the GF flour mix recipe I have on the site, as it has the baking powder in it.
GF Mini Loaf
1 egg or 1 TBS flax meal AND 3 TBS water
3 TBS buttermilk*
1/3 cup gluten free flour mix
1 tsp. honey or sugar or agave
Combine wet ingredients first, then dry. Stir well. Pour into small loaf pan (SMALL, like one from a kids baking set). Bake at 375 for 20 minutes in the MIDDLE of the oven.
*you can use dairy free milk. Just add a tsp. of lemon juice or vinegar to make it "buttermilk" to make a total of 3 TBS of "buttermilk".
Depending on your flours, and liquids, and weather, the middle can sometimes be sticky, but we like the ease of this recipe, quickness of it, and the flavor can always be changed by adding dry herbs.