You might also try replacing 1/4 of the sugar with granulated inulin. I've found inulin to be an amazing ingredient in baked goods. Inulin adds bulk the way sugar does and gives baked goods that "slippery" taste you expect from sugar.

Do a search on inulin to confirm that it is benign on LC diets. It is a fibre usually extracted from chicory root. Human digestive systems treat it as a fibre. At the same time it is a pre-biotic and is a food for friendly intestinal bacteria, so it may have a role in treating Candida.