Yes You Can is a great Australian brand (available internationally) with artisan baking mixes that are gluten free, dairy free, egg free, soy free, and nut free. Their vegetable oil is certified palm oil.
Their website has full ingredient lists for their baking mixes (handy!) as well as cooking instructions. Turns out these can even be cooked in a rice cooker if you don’t have an oven (or microwave).
So far I’ve made their Apple & Cinnamon muffins and their Chocolate Orange Zest (as cupcakes rather than a cake). I thought they were both tasty! I liked the apple & cinnamon best, my toddler prefers the chocolate orange (the icing is included in the pack).
21/1/17 I checked with them just to make sure about the soy and they were really quick to get back to me. They advise that they are soy free, and also nut free, so have updated the post. So handy to find for a family with allergies and I love that their website has information on the countries & locations/stockists where they can be purchased!