If you don't yet have an easy and allergy-friendly recipe, try this Wacky Cake recipe, or try out an allergy-safe mix, with egg replacers if necessary.
Clothing: Aprons or even old clothes (theirs or yours) come in handy here. Not only are they super cute in their play kitchen aprons or your husband's old work shirt, but putting a little thought into protecting their clothes takes a little bit of stress out of the equation. Spills are gonna happen...
Have those baby wipes handy: Not only for spills, but some kids just don't like icky hands--and that's ok.
Find teachable moments in baking--discuss measurements and fractions, teach the kids how to prepare for a project, and how to clean up. Also, show and teach the kids the names of all the ingredients. If they're stored at arms reach, the kids can eventually gather them up for you before baking, they'll learn to recognize some of their "safe" ingredients, and they will be able to do much of the adding and mixing on their own in no time--really!
If you have more than one child baking, teach them how to take turns. For example, I have one hold the bowl, while the other takes 10 turns around the bowl. One holds the measuring spoon, while the other pours the ingredient. It also helps if you have a few mixing spoons and spatulas around (you'll see why).
Kids' Table: If you have a kids' table in the kitchen or nearby, it makes things a little easier, especially for the really little ones. Otherwise, I like to pull my toddler's high chair right up to our kitchen table so she can comfortably participate (and be conveniently restrained at the same time!).
Teach the kids oven safety. I turn on the oven light when i start pre-heating the oven. Whenever the light is on, my kids know the oven is hot, and not to touch it.
If you're not baking with eggs, let the kids lick the spoons! Sometimes I'll scoop some leftover batter onto a clean spoon if there aren't enough to go around. This is definitely the best part about baking without eggs!
Send in your experiences, tips, and funny stories about baking with kids! The better prepared we are, the more likely we are to include the kids in the baking, and that makes for happier kids (and happier us).