man @Dreampipe was talking about it the other week, he tried it. I've been wanting to but funds do not allow!
I take care of a kid who is vegan. She brings her lunch with her, and I keep stuff on hand in the freezer for her just in case. Stocked up with vegan friendly snacks and on fridays everyone eats vegan. I try to match what the other kids eat with what she eats. So if her mother sends her with a vegan hot dog, the other kids get hot dogs, so she doesn't feel strange eating something different. Their sides are all the same because they get the fruits and veggies.
A parent brought doughnuts one day though, the doughnut holes and I felt bad because I didn't have something to sub in for that. But her parents told me to go ahead and give her one, it was okay, they understood raising their family in this way that this would happen and one doughnut hole wasn't going to kill her (It's a lifestyle choice for them as opposed to dietary requirement)
But now i'm trying to find a good recipe for cake/cupcakes because I tried the applesauce subbing and those cupcakes were bricks and horrible and they have birthday's soon enough and I'm determined to have cupcakes for her that are vegan.
But like someone else here says. Meat. Sorry. I love meat. God I love meat.