I had the fairytale, perfect mother vision of baking with my daughter, too.
That was before i'd ever actually baked with my daughter.
When she was aged between 2-3, she cried at the noise of the mixer. She cried if she got flour/egg on her. She cried if i tried to help in any way.
Aged 3-4, she tried to put her fingers in the mixer, she tipped egg and flour on herself, and kept trying to sit in the cooker.
Aged 4-5, she kept adding other ingredients when i wasn't looking for a second (soap powder muffins, anyone?), she would insist on washing her hands every minute, she would attempt to eat all the mixture.
Aged 5 (now), she won't let me help at all, she seems to know all the ingredients and instructions by herself and will tell me off for insisting the egg shells don't belong in the mixture, she'll splatter the mixture EVERYWHERE when trying to put it in the cases, she tries to 'dry the cats' hair' with the electric whisk.
Now, i bake in secret then call her over to decorate things when they've cooled.