Two ideas I see used in a lot of vegan recipes are mashed bananas and
By Julie via rec.food.veg 21 Sep 1998.
Mashed banana works, and other puréed fruits (like prunes) may work as
well. The texture will be a bit different, and you'd want to take into
account the sweetness of the fruit.
By Herl Jennifer via Celiac mailing list 20 Sep 1995.
1 Egg equals: 1/2 Large banana mashed
1 Egg equals: 1/4 cup applesauce or puréed fruit
1 Egg equals: 1 TBSP apricot puree
By Paula Clark via No-Milk mailing list 9 Jul 1997.