instead of 1 egg, you can use...
1 tbsp gram (chick pea) or soya flour and 1 tbsp water
1 tbsp arrowroot, 1 tbsp soya flour and 2 tbsp water
2 tbsp flour, 1/2 tbsp shortening, 1/2 tsp baking powder and 2 tsp water
50g tofu blended with the liquid portion of the recipe
1/2 large banana, mashed
50 ml white sauce
replacements for eggs as leavening agents (mainly in baking)...
use self raising flour
add extra oil and raising agent (e.g. baking powder)
use about 2 heaped tsp baking powder per cake
instead of baking powder, use 3/4 tsp bicarbonate of soda and 1 dssp cider vinegar (good for chocolate cakes)
try sieving the flour and dry ingredients, then gently folding in the liquid to trap air
alternative binding agents...
soya dessert - vanilla, chocolate, strawberry...
custard - see below
plain silken tofu
sweet white sauce (soya milk, vegan margarine, sugar and cornflour)