Hi Anne! Ground flax seeds are our best recommendation for egg substitutes in waffles. The fact that your waffles are splitting and sticking to the iron sounds like there might not be enough moisture in your waffle batter. I would recommend adding a bit more milk (buttermilk or a plant based milk will also work) or reducing the flour. To ensure that your finished waffles don't stick to the iron, try applying  a non-stick baking spray prior to griddling each waffle. Happy baking!

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