I immediately stumbled upon this WONDERFUL suggestion for an egg substitute when such an occasion as mine should arise (or, as well as the recipe turned out, I might start using this substitution all the time!)
1 Tablespoon of Vinegar + 1 teaspoon Baking Soda
Just to warn you (and you may have already gotten flashbacks of 6th grade science fair while reading that) but the combo does ‘erupt’ so just be careful!
The best part about this emergency substitution recipe is that you can let the kids have at the batter and not worry about what microbial friends might be hiding in the mix! For that reason alone, this eggless recipe might become a staple!