If you want to be super easy, most store bought cake mixes are vegan - some do contain whey so you have to check. You can add 1 can of soda to the dry mix and bake as directed. For light cakes, use 7 up or clear soda, for dark, you can use coke etc. Also, some of the canned frostings are vegan.
If you want to bake, Isa Chandra Moskowitz is where it's at. She has a cupcake book, most recipes can be doubled and baked in a 9X13. They are all stellar: http://www.amazon.com/dp/1569242739?tag=savechea-20
Fist-bump of solidarity! I work with a very small team -- there are only about 10 of us -- and I'll surprise them with baked treats every now and then.
I typically make cupcakes from Vegan Cupcakes Take Over the World and they're ALWAYS a hit. I've also taken in tiramisu, cinnamon rolls, and mini-doughnuts (can't find my usual recipe, but I know that I don't use a yeasted dough or flax meal). I made brownies last night -- subbing in dark chocolate chunks for the walnuts and adding 2tsp of cornstarch as a thickener -- and would have taken them in today but my sugar-fiend partner ate almost the whole pan >:O
My co-workers didn't know much about veganism, and it's been really exciting to get such a good reaction. There's something very disarming about baked goods; we've had conversations that I don't know would have been otherwise possible about what veganism is, and how easy it really is to make tasty food.
I really, really recommend that cupcake book! There's lots of good ideas in it, it's pretty user-friendly, and there's a great basic recipe that you can tweak to make your own flavor combos. I can tell you that the biggest hits for me have been lavender/lemon, matcha, chai, 'red' velvet, and vanilla with chocolate chips baked in.
This cookbook has never let me down: https://www.amazon.com/Vegan-Cupcakes-Take-Over-World/dp/1569242739
I've been laying here thinking hard about this while waiting for coffee and Adderall to kick in. This is a complicated subject for sure. **indraw of breath** Now, everyone is different, but my approach:
I try not to vegengelize unless invited. Only when asked directly will I get up on my podium, and they will ask. Then, I don’t sugar-coat it at all. I am painfully honest about what goes into animal-based products and the fate of those animals.
I frame it as a choice. I won’t force them to be vegan or even vegetarian. I think if you force them, they will be inclined to push back hard because that is what kids (or people generally) do. I won’t call them out if they knowingly get something with animal products in it. If they don’t, I gently remind them and let them make their own call. Do ice cream and cake win out sometimes? Of course, but you gotta play the long game here.
Get a copy of something like Vegan Cupcakes Take Over the World by Romero and Moskowitz. Make it a point to make fun things with them like cupcakes. So, they know in their heart of hearts that you make cupcakes with cornstarch, apple cider vinegar and soymilk (not eggs).
“But what about if we only eat the eggs/milk?” You gotta be ready for questions like these and have your answers ready. Start early with the concepts of: Animals as property, slavery, lifespans, and the like. They don’t exist to serve us. I use that verbiage when referring to pets or even ducks at the park as well. “Don’t pet them if they don’t want to be petted, it is their choice.”
Be consistent! Kids will spot even the tiniest lapses. Lead by example. Be a goddamn beacon of veganness. When thinking about this, I can’t get this bit out of my head from The Zax by Dr. Seuss:
“And I'll prove to YOU,” yelled the South-Going Zax, “That I can stand here in the Prairie of Prax for fifty-nine years! For I live by a rule that I learned as a boy back in South-Going School. Never budge! That's my rule. Never budge in the least! Not an inch to the west! Not an inch to the east! I'll stay here, not budging! I can and I will If it makes you and me and the whole world stand still!”
When they inevitably ask me what I think about my wife’s eating choices. Again, I am brutally honest, but I lay it out that it is her choice to make. I am also quick to point out that “She is my wife, and I would help her bury bodies if need be. That goes for you as well.”
Get a copy of Where the Sidewalk Ends, by Shel Silverstein. When reading it, I always make a point to slip in the poem Point of View.
I’ve had a lot of success with vegan cupcakes take over the world